Question

How do I do rate of change???

Answer 1

12

Explanation:

For our problem since we only in 10 am:

I'm going to let x=4 represent the time 10:04 am

which means I'm going to let x=17 represent 10:17am.

So when x=4, y=23 miles and when x=17,y=179 miles.

You have two points.

You can use the formula
`m=(y_2-y_1)/(x_2-x_1)`.

Or just line the points up vertically and subtract them vertically, then put 2nd difference over first difference. Like this:

( 17 , 179)

-( 4 , 23)

-----------------------

13 156

So the slope is 156/13=12 miles/hour.