Question

Directions: For the following systems, determine whether or not the ordered triple (1, -1, -2) is a solution to the equations below.

1. 3x – 3y – z = 2

Answer 1

NOT

Explanation:

Put x = 1, y = -1 and z = -2 to the equation 3x - 3y - z = 2, and check the equality:

3(1) - 3(-1) - (-2) = 3 + 3 + 2 = 8 ≠ 2