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2015-01-11T20:05:02+05:30

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1 ) b  

2) c

3) distance b/w (8,-2) from (0,0) = √ ( 8-0)² + ( -2-0)² = √ 64+4 = √ 68

4) given that the points lies on y axis which => value of x =0 so let the co ordinates

(0,y) as it is from origin so other co ordinates = (0,0)

distance = √ ( x1 - x2)² + ( y1-y2)²

13 = √y²=> y=13 answer

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