Question 164940
Is all you need to do is plug the numbers given as your x and solve for y;

x  | y
-2 |
-1 |
0  |
1  |
2  |
2x + y = 42
2(-2)+y=42
-4+y=42
y=42+4
y=46
==============
2x + y = 42
2(-1)+y=42
-2+y=42
y=42+2
y=44
================
2x + y = 42
2(0)+y=42
y=42
==============
2x + y = 42
2(1)+y=42
2+y=42
y=42-2
y=40
============
2x + y = 42
2(2)+y=42
4+y=42
y=38
:)