Evaluate the function f(x)=-3x+9 at the indicated values.

Question

a). f(2)=_____ simplify your answer
b).f(-2)=_____ simplify your answer

Answer 1

Replace x with given number.

f ( 2 ) = - 3 * 2 + 9 = - 6 + 9 = 3

f ( - 2 ) = - 3 * ( - 2 ) + 9 = 6 + 9 = 15