g(x) = -3x² - 2x + 3
g(-2) = -3(-2)² - 2(-2) + 3
g(-2) = -12 + 4 + 3 = -5
Well 5+2 is 7 and 51/2+21/7 is 57/2
Substitute 15 for p and 12 for q in p + q. We get 15 + 12, or 27.
The line goes 3 right for every 1 down, so the gradient is -1/3
The y-intercept is +4, so the equation is actually y=-1/3x+4, so Chris is wrong.