Solution
y = -3
y = 2x - 3
Substitute y for -3
-3 = 2x - 3
Add 3 to both sides
-3 + 3 = 2x - 3 + 3
Simplify the equation
0 = 2x
Switch sides so that the 2x is on the left side of the equation
2x = 0
Now divide both sides by 2
2x/2 = 0/2
Simplify the equation
x = 0
Therefore y = -3 and x = 0
