Question 109407
Are the following lines parallel, perpendicular, or neither?
L1 with equation x – 4y = 12
L2 with equation 4x + y = 4

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Write in slope-intercept form:
L1: y = (1/4)x-3; slope is 1/4
L2: y = -4x+4; slope is -4
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Since (14)*(-4)= 1- the lines are perpendicular.
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Cheers,
Stan H.