Mini-Investigation Scoop has a rolling ice cream cart. He recorded his daily sales for

Chapter 4, Problem 8

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Mini-Investigation Scoop has a rolling ice cream cart. He recorded his daily sales for the last seven days and the mean daytime temperature for each day.a. Find the equation of the line that passes through the points (79, 47) and (67, 30). (Use the second point as the point in the point-slope form.) b. Graph the data and your line from 8a on your calculator. Sketch the result. You should have noticed in 8b that the line does not fit the data well. In fact, no two points from this data set make a good model. In 8ce youll adjust the values of y1 and b in y = y1 + b(x x1) to find a better model.c. Copy the table shown, and begin by changing the value of y1. Write two new equations, one with a larger value for y1 and one with a smaller value for y1. Graph each equation, and describe how the graphs compare to your original equation. d. Now write two new equations that have the same values of x1 and y1 as the original, but larger and smaller values of b. Graph each equation, and describe how the graphs compare to your original equation. e. Continue to adjust your values for y1 and b until you find a line that fits the data well. Record your final equation. Graph your equation with the data and sketch the result.