This equation is the same as x+2y=-10.
There are many solutions (coordinates) for this equation and they can be represented by a straight line graph passing through (-10,0) and (0,-5), which are the axis intercepts.
Here are some examples:
x |
y |
coords |
-2 |
-4 |
(-2,-4) |
-1 |
-4.5 |
(-1,-4.5) |
0 |
-5 |
(0,-5) (y-intercept) |
1 |
-5.5 |
(1,-5.5) |
2 |
-6 |
(2,-6) |
There are an infinite number of solutions.