Question

How do you graph `x-1=y`?

Answer 1

See below

Explanation:

First of all, observe that this is a line, since you can rewrite the equation as `y-x+1=0`, which follows the pattern of the generic line `ax+by+c=0`.

To draw a line you need two of its points, which you can connect.

To find two points, you can plug any value for one variable, and solve for the other.

For example, let's choose `x=0`. The equation becomes `0-1=y`, and so `y=-1`. The first point is thus `(0,-1)`.

Then, let's choose `x=1`. The equation becomes `1-1=y`, and so `y=0`. The first point is thus `(1,0)`.

Now you only need to draw the points `(0,-1)` and `(1,0)`, connect them, and you have your line!