Question

What is f(-2) for the function f(x)= -3x + 8

Answer 1

`f(-2)=14`

Explanation:

Given function:

`f(x)=-3x+8`

To find
`f(-2)`

For the given linear function the
`x` value represents the input values of the function or the domain of the function while
`f(x)` represents the output values or the range of the function and is often refereed to as the
`y` values of the function.

In order to find
`f(-2)` we will plugin -2 in place of
`x` in the function and evaluate it. It means our input value =-2 and we need to calculate the output value.

Thus,

`f(-2)=-3(-2)+8`

`f(-2)=6+8` [ Product of two negative numbers is a positive number]

∴
`f(-2)=14` (Answer)