Question

For f(x) = -4x + 1, what is the output for an input of -2?

Answer 1

9

Explanation:

In this type of equation, x represents the input. So, all you simply have to do is replace x with -2 and then solve.

Input: -2

f(x) = -4x + 1

f(-2) = -4(-2) + 1

f(-2) = 8 + 1

f(-2) = 9

Answer 2

`\huge\boxed{\boxed{9}}`

Start with the original function:

`f(x)=-4x+1`

Substitute in the known value:

`f(-2)=-4(-2)+1`

Multiply:

`f(-2)=8+1`

Add:

`f(-2)=\large\boxed{9}`