y = -2x + 2 (1)
3x + 2y = 1 (2)
Substitution ......put (1) into (2)
3x + 2 [ -2x + 2] = 1
3x - 4x + 4 = 1
-x = -3
x = 3 and y = -2(3) + 2 = -4
Subtraction :
y = -2x + 2 → 2x + y = 2 (1)
3x + 2y = 1 (2)
Multiply (1) by 2
4x +2y = 4
3x + 2y = 1 subtract the second from the first
x = 3 and y = -2(3) + 2 = -4
Graph : https://www.desmos.com/calculator/xxjyr6ljsh
