Answer: average y = -8 average y =2
ARC : -4
Step-by-step explanation:
AB =

The midpoint os segment AB =

The midpoint is:
(1,-4)
This is relatively easy because that 25 is a perfect square, whose (square) roots are 5 and -5. x^2-10x+25 = (x - 5)(x - 5). Note how (-5)(-5) = +25, and how -5x - 5x = -10x.
The roots are { (x-5), (x-5) }.
Slope is 1 and y int is 1