Nike Net Sales. The net sales data in several years for Nike are given in the table at

Find the slope and the y-intercept of the graph of the linear equation. Then write the equation of the line in slopeintercept form.

Find the slope and the y-intercept of the graph of the linear equation. Then write the equation of the line in slopeintercept form.

Find the slope and the y-intercept of the graph of the linear equation. Then write the equation of the line in slopeintercept form.

Find the slope and the y-intercept of the graph of the linear equation. Then write the equation of the line in slopeintercept form.

Find the slope and the y-intercept of the graph of the linear equation. Then write the equation of the line in slopeintercept form.

Find the slope and the y-intercept of the graph of the linear equation. Then write the equation of the line in slopeintercept form.

Write a slopeintercept equation for a line with the given characteristics. m = 2 9, y-intercept 10, 42

Write a slopeintercept equation for a line with the given characteristics.m = - 3 8, y-intercept 10, 52

Write a slopeintercept equation for a line with the given characteristics.m = -4, y-intercept 10, -72

Write a slopeintercept equation for a line with the given characteristics.m = 2 7, y-intercept 10, -62

Write a slopeintercept equation for a line with the given characteristics.m = -4.2, y-intercept 10, 3 4 2

Write a slopeintercept equation for a line with the given characteristics.m = -4, y-intercept 10, - 3 2 2

Write a slopeintercept equation for a line with the given characteristics.m = 2 9, passes through 13, 72

Write a slopeintercept equation for a line with the given characteristics.m = - 3 8, passes through 15, 62

Write a slopeintercept equation for a line with the given characteristics.m = 0, passes through 1-2, 82

Write a slopeintercept equation for a line with the given characteristics.m = -2, passes through 1-5, 12

Write a slopeintercept equation for a line with the given characteristics.m = - 3 5, passes through 1-4, -12

Write a slopeintercept equation for a line with the given characteristics.m = 2 3, passes through 1-4, -52

Write a slopeintercept equation for a line with the given characteristics.Passes through 1-1, 52 and 12, -42

Write a slopeintercept equation for a line with the given characteristics.Passes through 1 -3, 1 2 2 and 11, 1 2 2

Write a slopeintercept equation for a line with the given characteristics.Passes through 17, 02 and 1-1, 42

Write a slopeintercept equation for a line with the given characteristics.Passes through 1-3, 72 and 1-1, -52

Write a slopeintercept equation for a line with the given characteristics.Passes through 10, -62 and 13, -42

Write a slopeintercept equation for a line with the given characteristics.Passes through 1-5, 02 and 10, 4 5 2

Write a slopeintercept equation for a line with the given characteristics.Passes through 1-4, 7.32 and 10, 7.32

Write a slopeintercept equation for a line with the given characteristics.Passes through 1-13, -52 and 10, 02

Write equations of the horizontal line and the vertical line that pass through the given point.10, -32

Write equations of the horizontal line and the vertical line that pass through the given point.1 - 1 4, 72

Write equations of the horizontal line and the vertical line that pass through the given point.1 2 11, -12

Write equations of the horizontal line and the vertical line that pass through the given point.10.03, 02

Find a linear function h given h112 = 4 and h1-22 = 13. Then find h122.

Find a linear function g given g1 - 1 4 2 = -6 and g122 = 3. Then find g1-32.

Find a linear function f given f 152 = 1 and f 1-52 = -3. Then find f 102.

Find a linear function h given h1-32 = 3 and h102 = 2. Then find h1-62.

Determine whether the pair of lines is parallel, perpendicular, or neither. y = 26 3 x - 11, y = - 3 26 x - 11

Determine whether the pair of lines is parallel, perpendicular, or neither.y = -3x + 1, y = - 1 3 x + 1

Determine whether the pair of lines is parallel, perpendicular, or neither.y = 2 5 x - 4, y = - 2 5 x + 4

Determine whether the pair of lines is parallel, perpendicular, or neither.y = 3 2 x - 8, y = 8 + 1.5x

Determine whether the pair of lines is parallel, perpendicular, or neither.x + 2y = 5, 2x + 4y = 8

Determine whether the pair of lines is parallel, perpendicular, or neither.2x - 5y = -3, 2x + 5y = 4

Determine whether the pair of lines is parallel, perpendicular, or neither.y = 4x - 5, 4y = 8 - x

Determine whether the pair of lines is parallel, perpendicular, or neither.y = 7 - x, y = x + 3

Write a slopeintercept equation for a line passing through the given point that is parallel to the given line. Then write a second equation for a line passing through the given point that is perpendicular to the given line.13, 52, y = 2 7 x + 1

Write a slopeintercept equation for a line passing through the given point that is parallel to the given line. Then write a second equation for a line passing through the given point that is perpendicular to the given line.1-1, 62, f 1x2 = 2x + 9

Write a slopeintercept equation for a line passing through the given point that is parallel to the given line. Then write a second equation for a line passing through the given point that is perpendicular to the given line.1-7, 02, y = -0.3x + 4.3

Write a slopeintercept equation for a line passing through the given point that is parallel to the given line. Then write a second equation for a line passing through the given point that is perpendicular to the given line.1-4, -52, 2x + y = -4

Write a slopeintercept equation for a line passing through the given point that is parallel to the given line. Then write a second equation for a line passing through the given point that is perpendicular to the given line.13, -22, 3x + 4y = 5

Write a slopeintercept equation for a line passing through the given point that is parallel to the given line. Then write a second equation for a line passing through the given point that is perpendicular to the given line.18, -22, y = 4.21x - 32 + 1

Write a slopeintercept equation for a line passing through the given point that is parallel to the given line. Then write a second equation for a line passing through the given point that is perpendicular to the given line.13, -32, x = -1

Write a slopeintercept equation for a line passing through the given point that is parallel to the given line. Then write a second equation for a line passing through the given point that is perpendicular to the given line.14, -52, y = -1

In Exercises 5156, determine whether the statement is true or false.The lines x = -3 and y = 5 are perpendicular.

In Exercises 5156, determine whether the statement is true or false.The lines y = 2x - 3 and y = -2x - 3 are perpendicular.

In Exercises 5156, determine whether the statement is true or false.The lines y = 2 5 x + 4 and y = 2 5 x - 4 are parallel.

In Exercises 5156, determine whether the statement is true or false. The intersection of the lines y = 2 and x = - 3 4 is 1 - 3 4, 22.

In Exercises 5156, determine whether the statement is true or false.The lines x = -1 and x = 1 are perpendicular.

In Exercises 5156, determine whether the statement is true or false.The lines 2x + 3y = 4 and 3x - 2y = 4 are perpendicular.

In Exercises 5760, determine whether a linear model might fit the data.0 0 2 Year x y 4 6 2 4 Sales (in million

In Exercises 5760, determine whether a linear model might fit the data.0 10 5 Year x y 0 8 4 Sales (in millions)

In Exercises 5760, determine whether a linear model might fit the data.0 0 2 Year x y 4 6 5 10 Sales (in millions)

In Exercises 5760, determine whether a linear model might fit the data.0 0 2 Year x y 4 6 10 20 Sales (in millions

Internet Use. The table below illustrates the growth in worldwide Internet use. Year, x Number of Internet Users Worldwide, y (in millions) 2001, 0 495 2002, 1 677 2003, 2 785 2004, 3 914 2005, 4 1036 2006, 5 1159 2007, 6 1393 2008, 7 1611 2009, 8 1858 2010, 9 2084* *Estimate Sources: International Telecommunication Union; ITU Statistics a) Model the data with a linear function. Let the independent variable represent the number of years after 2001; that is, the data points are 10, 4952, 13, 9142, and so on. Answers may vary depending on the data points used. b) Using the function found in part (a), estimate the number of Internet users worldwide in 2013 and in 2018.

Cremations. The table below illustrates the upward trend in America to choose cremation. a) Model the data with a linear function. Let the independent variable represent the number of years after 2005. Answers may vary depending on the data points used. b) Using the function found in part (a), estimate the percentage of deaths followed by cremation in 2013 and in 2016. Year, x Percentage of Deaths Followed by Cremation, y 2005, 0 32.3% 2006, 1 33.6 2007, 2 34.3 2008, 3 35.8 2009, 4 36.9

Expenditures on Pets. Data on total U.S. expenditures on pets, pet products, and related services are given in the table below. Model the data with a linear function. Then, using that function, estimate total U.S. expenditures on pets in 2005 and predict total expenditures in 2015. Answers may vary depending on the data points used. Year, x Total U.S. Expenditures on Pets (in billions) 1991, 0 $19.6 1994, 3 24.9 1997, 6 32.5 2000, 9 39.7 2003, 12 46.8 2006, 15 56.9 2009, 18 67.1 Sources: Bureau of Economic Analysis; U.S. Department of Commerce

Median Age. Data on the median age of the U.S. population in selected years are listed in the table below. Model the data with a linear function, estimate the median age in 1998, and predict the median age in 2020. Answers may vary depending on the data points used. Year, x Median Age, y 1970, 0 28.0 1980, 10 30.0 1990, 20 32.8 2000, 30 35.3 2008, 38 36.8 2011, 41 36.9* *Estimated Sources: U.S. Census Bureau; CIA World Factbook

Nike Net Sales. The net sales data in several years for Nike are given in the table at right. Model the data with a linear function, and predict the net sales in 2015. Answers may vary depending on the data points used. Year, x Net Sales (in billions) 2005, 0 $13.7 2006, 1 15.0 2007, 2 16.3 2008, 3 18.6 2009, 4 19.2 2010, 5 19.0 Source: Nike

Credit-Card Debt. Data on average credit-card debt per U.S. household are given in the table below. Model the data with a linear function, and estimate the average debt in 2007 and in 2014. Answers may vary depending on the data points used. Year, x Credit-Card Debt per Household, y 1992, 0 $ 3,803 1996, 4 6,912 2000, 8 8,308 2004, 12 9,577 2008, 16 10,691 2011, 19 14,750 Sources: CardTrak.com; www.creditcards.com

a) Use a graphing calculator to fit a regression line to the data in Exercise 61. b) Estimate the number of Internet users worldwide in 2013 and compare the value with the result found in Exercise 61. c) Find the correlation coefficient for the regression line and determine whether the line fits the data closely

a) Use a graphing calculator to fit a regression line to the data in Exercise 62. b) Estimate the percentage of deaths followed by cremation in 2013 and compare the result with the estimate found with the model in Exercise 62. c) Find the correlation coefficient for the regression line and determine whether the line fits the data closely.

a) Use a graphing calculator to fit a regression line to the data in Exercise 63.

a) Use a graphing calculator to fit a regression line to the data in Exercise 66.b) Estimate average credit-card debt per U.S. house hold in 2014 and compare the result with the estimate found with the model in Exercise 66. c) Find the correlation coefficient for the regression line and determine whether the line fits the data closely.

Maximum Heart Rate. A person who is exercising should not exceed his or her maximum heart rate, which is determined on the basis of that persons sex, age, and resting heart rate. The table below relates resting heart rate and maximum heart rate for a 20-year-old man.

Study Time versus Grades. A math instructor asked her students to keep track of how much time each spent studying a chapter on functions in her algebratrigonometry course. She collected the information together with test scores from that chapters test. The data are listed in the table below.

Find the slope of the line containing the given points.12, -82 and 1-5, -12

Find the slope of the line containing the given points.15, 72 and 15, -72

Find an equation for a circle satisfying the given conditions.Center 1-7, -12, radius of length 9 5

Find an equation for a circle satisfying the given conditions.Center 10, 32, diameter of length 5

Find k so that the line containing the points 1-3, k2 and 14, 82 is parallel to the line containing the points 15, 32 and 11, -62.

Road Grade. Using the figure below, find the road grade and an equation giving the height y as a function of the horizontal distance x.

Find an equation of the line passing through the point 14, 52 and perpendicular to the line passing through the points 1-1, 32 and 12, 92.