Question

function notations For the function below for which values of x does f (x)=2?

Answer 1

x=-1

Explanation

Step 1

when you have a function

$y=f(x)$

it means y value depends on the value of x

Hence

$f(x)=-2$

means there is a value x, that makes y =-2,to find that value:

a)look for -2 in y-axis

b) move to the line of the graph(yellow segment)

c)now, move vertically to the x-axis(green)

d) and that is the value for x(-1)

so, the answer is

x=-1

in other words

when x=-1, y=-2

I hope this helps you