How do you graph the function $f (x) = x$ $f(x)=x$ ?

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Answer 1 · 2018-06-18T11:50:41

See below

$f(x) =x:forall x in RR$

Let's think for a moment about what this means.
" $f$ is function of $x$ that is equal to the value $x$ for all real numbers $x$ "

The only way this is possible is if $f(x)$ is a straight line through the origin with a slope of $1$ .

In slope/intercept form: $y =1x +0$

We can visualise $f(x)$ from the graph below.

graph{x [-10, 10, -5, 5]}

How do you graph the function f(x)=xf(x)=xf(x)=x?