Chapter 8.4, Problem 3GP

To determine

To calculate: To find the rate of change for the linear function and interpret its meaning

Answer to Problem 3GP

Rate of change is $20$

Explanation of Solution

Given information: Function table is

Time (week)	Amount ($)
x	y
4	160
6	120

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:

Time (week)	Amount ($)
x	y
4	160
6	120

Rate of change is calculated as

  $\begin{array}{l}Rate=\frac{160-120}{6-4}\\ Rate=\frac{40}{2}\\ Rate=20\end{array}$

Rate is $20$ , means the amount is getting $\$20$ increased every week

Conclusion:

Hence, rate of change is $20$