Solving Systems of Equations by

You are given two equations:

x + y = 3

x - y + 1

First you must put the equations in slope-intercept form (y = mx + b)

y = -x + 3

y = x + 1

Then the two equations so you can see the point of intersection between the two lines.

The point of intersection is the soulution of the two equations.

(2, 1) x = 2, y = 1

Lastly, Plug in the value for each variable into the equations to check that they are correct.