Solved: Data Analysis: Exam Scores The table shows the mathematics entrance test scores

Fill in the blanks.An ordered pair of real numbers can be represented in a plane called the rectangular coordinate system or the ________ plane.

Fill in the blanks.The point of intersection of the - and -axes is the ________, and the two axes divide the coordinate plane into four parts called ________.

Fill in the blanks.The ________ ________ is a result derived from the Pythagorean Theorem.

Finding the average values of the representative coordinates of the two endpoints of a line segment in a coordinate plane is also known as using the ________ ________.

Plotting Points in the Cartesian Plane In Exercises 5 and 6, plot the points in the Cartesian plane.

Plotting Points in the Cartesian Plane In Exercises 5 and 6, plot the points in the Cartesian plane.

The point is located three units to the left of the -axis and four units above the -axis.

The point is on the -axis and 12 units to the left of the -axis.

Determining Quadrant(s) for a Point In Exercises 914, determine the quadrant(s) in which is located so that the condition(s) is (are) satisfied.

Determining Quadrant(s) for a Point In Exercises 914, determine the quadrant(s) in which is located so that the condition(s) is (are) satisfied.

Determining Quadrant(s) for a Point In Exercises 914, determine the quadrant(s) in which is located so that the condition(s) is (are) satisfied.

Determining Quadrant(s) for a Point In Exercises 914, determine the quadrant(s) in which is located so that the condition(s) is (are) satisfied.

Determining Quadrant(s) for a Point In Exercises 914, determine the quadrant(s) in which is located so that the condition(s) is (are) satisfied.

Determining Quadrant(s) for a Point In Exercises 914, determine the quadrant(s) in which is located so that the condition(s) is (are) satisfied.

The table shows the number of Wal-Mart stores for each year from 2003 through 2010. (Source: Wal-Mart Stores, Inc.)

The table shows the lowest temperature on record (in degrees Fahrenheit) in Duluth, Minnesota, for each month where represents January. (Source: NOAA)

Finding a Distance In Exercises 1722, find the distance between the points.

Finding a Distance In Exercises 1722, find the distance between the points.

Finding a Distance In Exercises 1722, find the distance between the points.

Finding a Distance In Exercises 1722, find the distance between the points.

Finding a Distance In Exercises 1722, find the distance between the points.

Finding a Distance In Exercises 1722, find the distance between the points.

Verifying a Right Triangle In Exercises 23 and 24, (a) find the length of each side of the right triangle, and (b) show that these lengths satisfy the Pythagorean Theorem.

Verifying a Right Triangle In Exercises 23 and 24, (a) find the length of each side of the right triangle, and (b) show that these lengths satisfy the Pythagorean Theorem.

Verifying a Polygon In Exercises 2528, show that the points form the vertices of the indicated polygon.Right triangle

Verifying a Polygon In Exercises 2528, show that the points form the vertices of the indicated polygon.Right triangle

Verifying a Polygon In Exercises 2528, show that the points form the vertices of the indicated polygon.Isosceles triangle

Verifying a Polygon In Exercises 2528, show that the points form the vertices of the indicated polygon.Isosceles triangle

Plotting, Distance, and Midpoint In Exercises 2936, (a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points.

Plotting, Distance, and Midpoint In Exercises 2936, (a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points.

Plotting, Distance, and Midpoint In Exercises 2936, (a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points.

Plotting, Distance, and Midpoint In Exercises 2936, (a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points.

Plotting, Distance, and Midpoint In Exercises 2936, (a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points.

Plotting, Distance, and Midpoint In Exercises 2936, (a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points.

Plotting, Distance, and Midpoint In Exercises 2936, (a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points.

Plotting, Distance, and Midpoint In Exercises 2936, (a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points.

Flying Distance An airplane flies from Naples, Italy, in a straight line to Rome, Italy, which is 120 kilometers north and 150 kilometers west of Naples. How far does the plane fly?

Sports A soccer player passes the ball from a point that is 18 yards from the endline and 12 yards from the sideline. A teammate who is 42 yards from the same endline and 50 yards from the same sideline receives the pass. (See figure.) How long is the pass?

Sales The Coca-Cola Company had sales of $19,564 million in 2002 and $35,123 million in 2010. Use the Midpoint Formula to estimate the sales in 2006. Assume that the sales followed a linear pattern. (Source: The Coca-Cola Company)

Earnings per Share The earnings per share for Big Lots, Inc. were $1.89 in 2008 and $2.83 in 2010. Use the Midpoint Formula to estimate the earnings per share in 2009. Assume that the earnings per share followed a linear pattern. (Source: Big Lots, Inc.)

Translating Points in the Plane In Exercises 4144, find the coordinates of the vertices of the polygon after the indicated translation to a new position in the plane.

Translating Points in the Plane In Exercises 4144, find the coordinates of the vertices of the polygon after the indicated translation to a new position in the plane.

Translating Points in the Plane In Exercises 4144, find the coordinates of the vertices of the polygon after the indicated translation to a new position in the plane. Original coordinates of vertices:

Original coordinates of vertices: Shift: 6 units down, 10 units to the left

Minimum Wage Use the graph below, which shows the minimum wages in the United States (in dollars) from 1950 through 2011. (Source: U.S. Department of Labor) (a) Which decade shows the greatest increase in minimum wage? (b) Approximate the percent increases in the minimum wage from 1990 to 1995 and from 1995 to 2011. (c) Use the percent increase from 1995 to 2011 to predict the minimum wage in 2016. (d) Do you believe that your prediction in part (c) is reasonable? Explain.

Data Analysis: Exam Scores The table shows the mathematics entrance test scores and the final examination scores in an algebra course for a sample of 10 students. (a) Sketch a scatter plot of the data. (b) Find the entrance test score of any student with a final exam score in the 80s. (c) Does a higher entrance test score imply a higher final exam score? Explain.

Using the Midpoint Formula A line segment has as one endpoint and as its midpoint. Find the other endpoint of the line segment in terms of and

Using the Midpoint Formula Use the result of Exercise 47 to find the coordinates of the endpoint of a line segment when the coordinates of the other endpoint and midpoint are, respectively, (a) and (b)

Using the Midpoint Formula Use the Midpoint Formula three times to find the three points that divide the line segment joining and into four parts.

Using the Midpoint Formula Use the result of Exercise 49 to find the points that divide the line segment joining the given points into four equal parts. (a) (b)

Make a Conjecture Plot the points and on a rectangular coordinate system. Then change the signs of the indicated coordinates of each point and plot the three new points on the same rectangular coordinate system. Make a conjecture about the location of a point when each of the following occurs. (a) The sign of the -coordinate is changed. (b) The sign of the -coordinate is changed. (c) The signs of both the - and -coordinates are changed.

Collinear Points Three or more points are collinear when they all lie on the same line. Use the steps following to determine whether the set of points and the set of points are collinear. (a) For each set of points, use the Distance Formula to find the distances from to from to and from to What relationship exists among these distances for each set of points? (b) Plot each set of points in the Cartesian plane. Do all the points of either set appear to lie on the same line? (c) Compare your conclusions from part (a) with the conclusions you made from the graphs in part (b). Make a general statement about how to use the Distance Formula to determine collinearity.

Think About It When plotting points on the rectangular coordinate system, is it true that the scales on the - and -axes must be the same? Explain.

Think About It What is the -coordinate of any point on the -axis? What is the -coordinate of any point on the -axis?

In order to divide a line segment into 16 equal parts, you would have to use the Midpoint Formula 16 times.

The points and represent the vertices of an isosceles triangle.

If four points represent the vertices of a polygon, and the four sides are equal, then the polygon must be a square.

HOW DO YOU SEE IT? Use the plot of the point in the figure. Match the transformation of the point with the correct plot. Explain your reasoning. [The plots are labeled (i), (ii), (iii), and (iv).]

Proof Prove that the diagonals of the