Question

4x – 2y = -8
y = 2x + 4

Answer 1

Set any x and then compute y as 2x + 4. The pair solves the equations.

Explanation:

4x - 2y = -8

4x = 2y - 8

2x = y - 4

y = 2x + 4

2x + 4 = y

2x = y - 4

Both equations are the same, so any pair of x and y for which 2x = y - 4 works.

Set any y and then compute x as (y - 4)/2

Alternatively

2x = y - 4

2x + 4 = y

Set any x and then compute y as 2x + 4.