Question 187320: Are the following lines parallel, perpendicular?
L1 with equation x – 2y = 4
L2 with equation 2x + y = 2 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Are the following lines parallel, perpendicular?
L1 with equation x – 2y = 4
slope-intercept form: y = (1/2)x -2 ; slope = 1/2
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L2 with equation 2x + y = 2
slope-intercept form: y = -2x + 2 ; slope = -2
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Since -2(1/2) = -1, the lines are perpendicular.
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Cheers,
Stan H.
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