2y = -10
y = -5
8 - 2x - 2(-5) = -10
8 - 2x + 10 = -10
-2x = -10 - 18
2x = 28
x = 14
Check:
2y = 8 - 2x - 2y = -10
2(-5) = 8 - 2(14) - 2(-5) = -10
-10 = 8 - 28 + 10 = -10
-10 = -20 + 10 = -10
-10 = -10 = -10
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Any pair of numbers where the 'y' is 5 more than the 'x'. There are an infinite number of suitable pairs. 2y-2x=10 2y-2x+2x=10+2x 2y=2x+10 divide both side by 2. y=x+5
(2, 1)
If: 12 = 2y+x then y = -1/2x+6 So: y = 2x+4 and y = -1/2x+6 which means that they are perpendicular lines
They are parallel lines.
2x+2y