Algerbra
posted by Harley .
A piont on a graph that works for xy=8and x+y=2

This is a system of equations.
xy=8
x+y=2
The easiest way to solve would be the elimination method because it is already set up; if you add the equations, the y cancels out and gives you:
2x=6
Further,
x=3
Given x you can find y in any equation above; xy=8
Substitute the 3: 3y=8
y=5