Question

What is the value of f(−1) when f(x)=2x+2 ?

Answer 1

`f(-1) = 0`

Explanation:

We are given a function
`f(x)= 2x+2`.

To solve a problem like this, where we need to find the value of f(x) when the value of x is -1, we just need to substitute the given value of x in the function to get:

`f(x) = 2x+2`

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

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

`f(-1) = 0`

Therefore, the value of the given function is 0, when x is -1.

Answer 2

the value of f(−1) when f(x)=2x+2

To find the value of f(-1), we plug in -1 for x in the given f(x) = 2x + 2

f(x) = 2x + 2

f(-1) = 2(-1) + 2 = -2 + 2 = 0

so f(-1) = 0

this means when x= -1 the value of y is 0

f(x) is y always

f(-1) means the value of y when x=-1

So we always plug in x value in the place of x to evaluate f(x)

WE got f(-1) = 0