#1**+3 **

a. Similar to the last one, we have

Avg rate of change = [Ending height - Beginning height ] / [ Ending time - Beginning time ]

First 2.5 seconds

[25 - 0 ] / [ 2.5 - 0] = 25 / 2.5 = 10 ft/sec

2.5 to 5

[ 0 - 25 ] / [ 5 - 2.5 ] = -25 / 2.5 = -10 ft/sec

0 to 1

[ 15 - 0 ] / [ 1 - 0 ] = 15 ft/sec

1 to 2

[ 24 - 15 ] / [ 2 - 1 ] = 9/1 = 9 ft/sec

b. Definitely not.....the graph is a parabola.....the rates of change on a parabola are not constant

c. Avg rate of change over entire 5 seconds

[ 0 - 0 ] [ 5 - 0 ] = 0/ 5 = 0 ft/sec

CPhill Aug 10, 2018

#2**+1 **

Thank you! I honestly only wanted the formula, but thanks haha

I wanted to make sure I was doing it correctly ^-^

RainbowPanda
Aug 10, 2018