Question

Given the function below, find value (s) of x if f(x)=7

Answer 1

Two answers are:   -1 and 1

Explanation:

f(x) and y are often used interchangeably. We are asked to find the x value(s) when y = 7.

Circle the rows where 7 shows up in the y column. You should find that x = -1 and x = 1 are circled as well.

So f(x) = 7 leads to x = -1 or x = 1. In other words, f(-1) = 7 and f(1) = 7 also.

Answer 2

Answer:

-1 or 1

Step-by-step explanation:

f(x) = y

y is the output

f(x) = 7 ⇒ the output (y) is 7.

When y = 7, x = -1 or x = 1

There are two values.