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Mathematics 10 Online
OpenStudy (anonymous):

Given that P = (-5, 5) and Q = (-13, 10), find the component form and magnitude of 2 (line)PQ

OpenStudy (reemii):

PQ is the vector "Q - P". (-13,10) - (-5,5) = (-8, 5). 2PQ = 2(-8,5) : component form magnitude = norm. use Pythagoras

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