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D: -1/4 help please......,,,,,,.

D: -1/4 help please......,,,,,,.
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3 votes
D: -1/4 help please......,,,,,,.

D: -1/4 help please......,,,,,,.-example-1
User Shannon Holsinger
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if m is the slope of first line and m' is the slope of the perpendicular line . m*m'=-1
User Wagner Sales
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