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& Find the value of 'y for which the distance between the If p (2,-3) and Q(10,y) is10 units. |
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Answer» Distance between two POINT (x 1 ,y 1 ) and (x 2 ,y 2 ) is given by,= (x 2 −x 1 ) 2 +(y 2 −y 1 ) 2 10 2 =(10−2) 2 +(y+3) 2 (y+3) 2 =10 2 −8 2 (y+3) 2 =6 2 y+3=±6∴y=3ory=−9 |
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