Question

Which of the following is a solution to the linear function 2x - y = -1

(2, -1)
(1, 2)
(-3, -1)
(1, 3)

Answer 1

The solution to this equation is (1, 3)

Explanation:

In order to determine if it is a solution, you must put both variables into the equation and have it produce a true statement. (1, 3) does exactly that.

2x - y = -1

2(1) - (3) = -1

2 - 3 = -1

-1 = -1 (TRUE)