Question

Let g(y)= - y2 +9y + 10. Find g(-2).

Answer 1

$g(x)=-y^2\text{ + 9y + 10}$

To find g(-2)

We will have to replace y in the function with -2

$g(-2)=-(-2)^2\text{ + 9(-2) + 10}$

g(-2) = - 1x 4 + 9 x -2 + 10

g(-2) = -4 -18 + 10

g(-2) = -22 + 10

g(-2) = -12