Given f(x) = -4x + 4, solve for x when f(x) = 0.

Restrictions on f(x) = 1/x+5 and g(x) = x-2

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)