Question 583354: Decide if these equations represent parallel lines, perpendicular lines, or neither
4x+8y=12
y=2x+10
y=3x+2
5x+2y=20
y=3x+2
y=3/1x+15
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Decide if these equations represent parallel lines, perpendicular lines, or neither
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Solve for y.
Then the slope, m, = the coefficient of x
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4x+8y=12
y=2x+10
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Solve for y
4x+8y=12x
8y = 8x
y = x
Slope = 1
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y=2x+10
Slope = 2
If the slopes are equal, they're parallel.
If the slopes are negative inverses, they're perpendicular.
These 2 are:
Neither
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Do the others the same way.
y=3x+2
5x+2y=20
y=3x+2
y=3/1x+15
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