Question

The graph of the function, ƒ, is shown. Find all numbers, x, such that f(x) = 1.

A) ƒ(1) = 1, ƒ(2) = 1
B) ƒ(−1) = 1, ƒ(2) = 1
C) ƒ(1) = 1, ƒ(−2) = 1
D) ƒ(−1) = 1, ƒ(−2) = 1

Answer 1

You know that f(x) or y is 1, and you are trying to find all the numbers on the x-axis that has a y coordinate of 1. Based on the graph, when x is 2 and -1, the y coordinate is 1, so your answer is B.

Answer 2

B.
`f(-1)=1,f(2)=1`

Explanation:

We have been given graph of a function. We are asked to find all values of x, such that
`f(x)=1`.

To solve our given problem, we need to find the values of x, when
`y=1`.

Upon looking at our given graph, we can see that at
`x=-1` and
`x=2`, the value of the given function is 1, therefore,
`f(-1)=1,f(2)=1`and option B is the correct choice.