# How do you graph x-y=7  by plotting points?

Jun 22, 2017

A straight line through $\left(0 , - 7\right)$ and $\left(7 , 0\right)$

#### Explanation:

$x - y = 7$ can be rewritten as $y = x - 7$

This is the equation of a straight line of slope = 1 and y-intecept of $- 7$

Since the graph is a straight line only need two points to plot it.

For simplicity, I will choose $\left(0 , - 7\right)$ and $\left(7 , 0\right)$

The graph of the line is shown below.
graph{x-y=7 [-19.78, 31.54, -13.64, 12.02]}