Question

Given the function f(x)=4x-9, evaluate and simplify the following f(-6) and f(4)

Answer 1

f(-6) = -33, f(4) = 7

Explanation:

`f(x)=4x-9`

f(-6), f(4)

Put x = -6 and x = 4 to the equation of the function:

`f(-6)=4(-6)-9=-24-9=-33\\\\f(4)=4(4)-9=16-9=7`