Question

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

Answer 1

A straight line through `(0, -7)` and `(7, 0)`

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 `(0, -7)` and `(7, 0)`

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