Thank you for the opportunity to help you with your question! the solution is as such:

The avg rate of change between two points x= 1 and x= 2 can be calculated as the slope of

line between (a, f(a)) and (b, f(b)).

So slope = (y2 - y1) /( x2- x1)

Slope = (11- 18) / (1-2)

Slope = 7

So the avg rate of change is 7.

Please let me know if you need any clarification. I'm always happy to answer your questions.awaiting a positive feedback. It was lovely helping you. Looking forward to help you again. A positive feedback awaited thank you.

Jun 28th, 2015

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