Question

Find f (×-1) when f (×) =-3×+7. find f (x-1). what's the answer?

Answer 1

`f(x-1)=-3x+10`

Explanation:

Substitute
`x-1` instead of
`x` into the function expression:

if
`f(x)=-3x+7,` then

`f(x-1)=-3(x-1)+7=-3x+3+7=-3x+10.`

You get the expression
`f(x-1)=-3x+10.`