Solution
For this case we have the following equation given:
-2x +y= -6
And we want to find the possible solutions for the given pairs, so we can do this:
Part a
-2x +0 = -6
-2x = -6
x= 3 (3,0)
Part b
-2*0 +y = -6
y= -6
y= -6 (0,-6)
Part c
-2x -2 = -6
-2x = -4
x= 2 (2,-2)