Question

Julie made 25 international long-distance phone calls to London last month. The scatterplot below shows the length and cost of each phone call she made.Cost of International Long-Distance Phone Calls (in $) vs. Length of Call (minutes) Which conclusion is best supported by the scatterplot?

a) As the length of a call increases, the cost of the call increases.
b) As the length of a call increases, the cost of the call remains the same.
c) As the length of a call increases, the cost of the call decreases.
d) There is no relationship between the cost of the call.

Answer 1

The scatterplot shows that as the length of a call increases, the cost of the call also increases.

Step-by-step explanation:

The scatterplot shows the relationship between the length of an international long-distance phone call and its cost. By observing the scatterplot, we can see that as the length of a call increases, the cost of the call also increases. This can be concluded because the points on the scatterplot are generally moving in an upward direction. Therefore, the best-supported conclusion is:

a) As the length of a call increases, the cost of the call increases.