Question

How do you solve `x- y=4`, `2x - 5y=2` by graphing?

Answer 1

graph{(x-y-4)(2x-5y-2) = 0 [-10, 10, -5, 5]}

So we graph it, and find the intersection, which appears to be (6,2)

Thus, the solution is x = 6 and y = 2.