Evaluate -2x + y – 6 when x = 3 and y = -4.
Note
Substitute the given values carefully: -2(3) + 1(-4) - 6 = -6 - 4 - 6 = -16. A common mistake is to ignore the sign of y or the sign of the coefficient.
Evaluate -2x + y – 6 when x = 3 and y = -4.
Substitute the given values carefully: -2(3) + 1(-4) - 6 = -6 - 4 - 6 = -16. A common mistake is to ignore the sign of y or the sign of the coefficient.