Mentor Teaching · Selected teaching responses

Solve a Linear System and Check Both Equations

Response A: Verify the same pair twice

For x + y = 9 and 2x - y = 3, test (4, 5), then test (3, 6). For each, state whether it satisfies each equation and whether it solves the system.

Show or explain your reasoning. Use the space below or continue on separate paper.

Mentor Teaching · Selected teaching responses

Solve a Linear System and Check Both Equations

Response B: Substitute the whole expression

Solve x = y + 2 and 3x - y = 10. A learner writes 3y + 2 - y = 10 after substituting. Explain the needed correction, then solve and check.

Show or explain your reasoning. Use the space below or continue on separate paper.