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Determines if the points ( 1 , 5) ,( 2, 3) , ( - 2, -11) are collinear |
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Answer» A=(1,5) , B=(2,3)So AB= square root over 2-1 + 3-5=square root over -1C=(-2-1)So BC=√-2-2 + -1-3= √8=2 root 2. Therefore AB+BC= square root of -1-8=√9=3So in order to verify whether AB+BC=ACAC √-2-1+-1-5=√9=3 |
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