Question

What is the output of this function when the input is 2

Answer 1

The output is -6 in this function

Answer 2

If we say that this linear function is $f(x)$, then the input of the function would be defined by $x$, which is 2 in this case.

This basically means we are finding $f(x)$ when $x$ is 2, or $f(2)$, or in layman's terms, what the $y$ value is when $x$ is 2.

If we find 2 on the $x$-axis, and see where the line is on the $y$-axis, we see that when the input of the function is 2, the output is -6.

Hope this helps!