Answer:
Perpendicular
Explanation:
y=2x+4
x+2y=6
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2y=6-x
2y=-x+6
y=-1/2x+6/2
y=-1/2x+3
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y=2x+4 and y=-1/2x+3
look at the two slopes from these two equations here,
y=mx+b where m=slope.
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The first line has a slope of 2 and the second line has a slope of -1/2. Which means/indicates that they are perpendicular. Because one of them is the negative reciprocal of another.