The total cost C, in dollars, to dry clean a certain number of shirts s is given by the equation C=3.25s. Question 1
Part A

What is the dependent variable? What is the independent variable?

Enter the correct answers in the boxes.

Dependent variable:

Independent variable:

Question 2
Part B

Complete the table to relate the total cost to the number of shirts.

Enter the correct answers in the boxes.

Shirts, s 3
10
Cost, C $
$16.25 $26.00 $

Question 3
Part C

Plot the first two points in the table on the graph.

Use the Point Tool to plot the points.

Dry Cleaning
ShirtsCost (dollars)
Question 4
Part D

Should you draw a straight line through the points on the graph, or should you leave them as separate points? Explain.

You should draw a straight line because all the points can be connected with the same line.

You should leave them as separate points because a straight line cannot be drawn through all four points.

You should draw a straight line because the total cost can include both whole dollars and parts of dollars.

You should leave them as separate points because you can only have whole numbers of shirts.