Graphing and finding average rate of change of d.

[vincent4math]

I am confused to this problem, a step-by-step explanation with solutions would be helpful.
Look at the attached image for the problem.

 

[skeeter]

where lies the confusion?

1. graphing the given function?

2. evaluating the slope between the two points on the graph?

3. writing a linear equation?

 

[Steven G]

This is a math help forum so do not expect anyone here to give you a step-by-step solution. We expect that you solve your own problem with hints from forum helpers.

So please post back telling us where you are stuck and show us the work you have done so far.