Question

find four solutions of the equation x + 2y = 0

Answer 1

the four solutions are (0,0),(-1,1/2),(1,-1/2),(2,-2),(-2,2)

Answer 2

2y = - x ⇒ y = -x/2

so we put values for x and we get values for y which will be the solutions

   x    y
1) 0    0
2) 1   - 1/2
3) 2    -1
4) 3    -3/2