Points A and B are in the first quadrant; point 'O" is the origin. If the slope of OA is 1, slope of OB is 7 and OA = OB, then the slope of AB is

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0.50

-0.50

0.1

answer is B.

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Detailed Solution

tanθ=7; OA=OB=rsinθ=752;cosθ=152 Now, mAB=−1/2

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