y = x 11 – y = -3x 3 – y = x + 4 y = - x + 3 y = x 1 – y = -x 2 – y = - x + 2 y = x + 5 y = -x + 3 Systems: Solve by Substitution Classwork x = 4y 9 – x = y + 3 5x = -2y + 48 x = -3y + 20 y 4x = 28 – y = -2x 2 – y + 2x = -12 y = x + 15 x = -2y 7 – 2x + y = -14 x = 5y 38 – x = -4y + 16
y = x – 11 y = -3x – 3 y = x + 4 y = - x + 3 y = x – 1 y = -x – 2 y = - x + 2 y = x + 5 y = -x + 3 Systems: Solve by Substitution Classwork x = 4y – 9 x = y + 3 5x = -2y + 48 x = -3y + 20 y – 4x = 28 y = -2x – 2 y + 2x = -12 y = x + 15 x = -2y – 7 2x + y = -14 x = 5y – 38 x = -4y + 16