if a polynomial is divided by (x-a) and the remainder equals zero, then (x-a) is a factor of the polynomial

True.

Step-by-step explanation:

This is the basis for polynomial division/remainder theorem.

Given a polynomial p(x) and a divisor (x - a), if p(a) = 0, then the expression factors in perfectly.

Likewise, if the remainder in p(x)/(x-a) = 0, then the expression factors in perfectly.

I hope this helps!

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1