Question

Given f(x)= -6x+1 find f(3x+1)

Answer 1

f(3x + 1) = - 18x - 5

Explanation:

Substitute x = 3x + 1 into f(x), that is

f(3x + 1)

= - 6(3x + 1) + 1 ← distribute and simplify

= - 18x - 6 + 1

= - 18x - 5