How do i graph and do this problem Y=x

Answer 1

It's simple.
Whatever y is, x is, or vice versa.
For example, if x=1, y=1.
if x=-1, y=-1.
You can determine the slope from there (You shouldn't have to).

Answer 2

In google type:
functions graphs online

When you see list of results click on:

rechneronline.de/function-graphs/

When page be open in blue recatacangle type: x

Then click option Draw

You will see graph of your function.