Evaluate 4x – y – 6 when x = -4 and y = -1.
Note
Substitute the given values carefully: 4(-4) - 1(-1) - 6 = -16 + 1 - 6 = -21. A common mistake is to ignore the sign of y or the sign of the coefficient.
Evaluate 4x – y – 6 when x = -4 and y = -1.
Substitute the given values carefully: 4(-4) - 1(-1) - 6 = -16 + 1 - 6 = -21. A common mistake is to ignore the sign of y or the sign of the coefficient.