Solve by Graphing x+y=4 , y-x=4

$x + y = 4$ , $y - x = 4$

Step 1

Subtract $x$ from both sides of the equation.

$y = 4 - x$

$y - x = 4$

Step 2

Add $x$ to both sides of the equation.

$y = 4 + x$

$y = 4 - x$

Step 3

Create a graph to locate the intersection of the equations. The intersection of the system of equations is the solution.

$(0, 4)$

Step 4