Question

F(x)=2x-3, find f(-4)

Answer 1

f(-4)=-11

Explanation:

f(x)=2x-3

Let x=-4

f(-4)=2(-4)-3

= -8-3

= -11

Answer 2

f(- 4) = - 11

Explanation:

substitute x = - 4 into f(x) , that is

f(- 4) = 2(- 4) - 3 = - 8 - 3 = - 11