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Let P and Q be constants. The graphs of the lines x + 5y = 7 and 18x + Py = Q are perpendicular and intersect at the point (-8,-3). Enter the ordered pair (P,Q).

 Jun 30, 2020
 #1
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(-8,-3) is not on the line  x+5y = 7       Did you enter your Q correctly?

 Jun 30, 2020

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