Question

10. The graph shows the amount in Harold's savings account over a certain number of weeks. Find the rate of change and record it in the grid. Amount In Savings ($)

questions in photo​

Answer 1

rate of change is -10.5

Explanation:

Answer 2

-10.5

Explanation:

Pick two points that the line overlaps. We can see the points are on (0,63) (2,42) and (4,21). Lets use (2,42) and (4,21). To find the rate of change (m) the formula needed is y^2 - y^1 divided by x^2 - x^1. 21-42=-12 over 4-2=2. So we get -10.5 for the rate of change.