Question

Check whether (1,-2) in a solution of 2x-y=6

Answer 1

To check whether (1,-2) is included in the solution set of 2x - y = 6, we will replace x with 1 and y with -2:

→ 2(1) - (-2) = 6

→ 2 + 2 = 6

→ 4 = 6

A false statement means that (1,-2) is not a solution.