What does the graph x=y or x=f(x) look like?

Test Preparation
1

<p>I was maybe thinking that it's the same as y=x, but I'm not sure.</p>

2

<p>x = y is the same as y = x
x = f(x) is the same as f(x) = x</p>

<p>so you have a line 45 degrees above the horizontal that goes through the origin</p>

3

<p>Thank you, tanonev.</p>

4

<p>x = f^(-1) (x) - inverse function.</p>

<p>What is f(x)?</p>

5

<p>x .</p>

6

<p>the simple thing about inverse functions is that you just switch the x and y and then solve for y.</p>

7

<p>sorry but your post is kind of funny.</p>

<p>An equal side means two things are equal. In your case x and y are equal. If y is 1, x is 1. I'm gonna go ask my little sister if she knows that.</p>

<p>Edit: She does.</p>

8

<p>...yeah it is kinda funny</p>

<p>that's like something you learn in 6th grade</p>

<p>the equal sign means just that... they are equal... it doesn't matter what side is on what side... I guess we just get taught the one way (y=5x, f(x)=20x^2 etc) that we forget?</p>