SOLUTION: Write an equation of the parabola that passes through the point (−10,48) and has x-intercepts −8 and 50. Then find the average rate of change from x=−8 to x=−5

Question 1147852: Write an equation of the parabola that passes through the point (−10,48) and has x-intercepts −8 and 50. Then find the average rate of change from x=−8 to x=−5
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.

I just found the equation of this parabola under this link

https://www.algebra.com/algebra/homework/Linear-equations/Linear-equations.faq.question.1147818.html

https://www.algebra.com/algebra/homework/Linear-equations/Linear-equations.faq.question.1147818.html

It is f(x) = 0.4*(x+8)*(x-50).

The average rate of change  of this function from x= -8  to  x= -5  is


    r =  = .


Notice that f(-8) = 0,  so the last formula simplifies to


    r = .


You do the rest.

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