Find g(x), where g(x) is the reflection across the y-axis of f(x)=7x+7.

Answer 1

To reflect over y = x, the numbers in the ordered pairs switch position, r_y=x (x, y) → (y, x).

f(x) = 7x + 7

7g(x) + 7 = x

7g(x) = x - 7

g(x) = x/7 - 1