How do you graph x-y=1 by plotting points?

1 Answer
Jan 30, 2016

Look below!

Explanation:

Given equation is x-y=1
As I've always stated, we can solve it in a simple 2-step manner, and this manner is the same for all linear equations.

  1. Step 1. Take x=0 and solve for y. We will get 0-y=1\impliesy=-1 So the first point of our consideration is (0,-1).
  2. Step 2. Next we take y=0 and solve for x. We get x-0=1\impliesx=1. So the next point in our consideration is (1,0)

So finding these 2 points and joining them through a line, we then extend the line on either sides to whatever length we see fit. So the graph will look a lot like this.
graph{x-y=1 [-2.5, 2.5, -1.25, 1.25]}