Question

If f(x)=6x-4 what is the f(x) when x=8

Answer 1

44

Explanation:

Function notation is f(x) and says an output value f(x) for an input value x. So when x=8, we find f(8).

We substitute x=8 which is f(8)=6(8)-4.

We simplify f(8)=48-4=44.

So f(8)=44. When x=8, f(x) is 44.