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Mathematics 8 Online
OpenStudy (anonymous):

HELP ILL GIVE MEDALS!! Select the pair of slopes that are the slopes of perpendicular lines. 3 and 1/3 7/8 and -7/8 1/4 and 1/4 -2/3 and 3/2

OpenStudy (anonymous):

3 and 1/3 because the perpendicular line is the reciprocal of the other line

OpenStudy (anonymous):

yes, it's 3 and 1/3, the second option is wrong because it also has opposite signs (it has to remain the same sign), 1/4 and 1/4 have the exact same slope, and the last is wrong for the same reason as the second option

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