Chapter 8, Problem 20MCQ

To determine

To calculate: To find the rate of change for the linear function

Answer to Problem 20MCQ

Rate of change is $15$

Explanation of Solution

Given information: Function table is

Saving Money
Number of weeks	Amount Saved ($)
x	y
3	25
4	40
5	55
6	70

Formula Used:

Rate of change of linear function is the rate that describes how one quantity changes in relation to another quantity.

Calculation:

Function table is given as follows:

Saving Money
Number of weeks	Amount Saved ($)
x	y
3	25
4	40
5	55
6	70

Rate of change is calculated as

  $\begin{array}{l}Rate=\frac{40-25}{4-3}\\ Rate=\frac{15}{1}\\ Rate=15\end{array}$

Conclusion:

Hence, rate of change is $15$