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OpenStudy (inexilewetrust):
Question 6. 6. Which pair of equations represents two perpendicular lines? (Points : 3) Option A: -3x+2y=10 and -2x+12 Option B: 2x-5y=45 and y-5/2 x=-9 Option C: x=4y+4 and 4x+4y=4 Option D: 7x+4y=20 and y-3=- 4/7 x
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OpenStudy (bee_see):
ok, for two lines to be perpendicular, they need to be -1. let be choice a has an example.
OpenStudy (bee_see):
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