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

1 Answer
Alan N.
Jun 18, 2018

See below

Explanation:

#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]}

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