Which of the following pair of straight lines intersect at right angle?A. `2x^(2)=y(x+2y)`B. `(x+y)^(2)=x(y+3x)`C. `2y(x+y)=xy`D. `y= pm 2x`

Which of the following pair of straight lines intersect at right angle

1.	Which of the following pair of straight lines intersect at right angle?A. `2x^(2)=y(x+2y)`B. `(x+y)^(2)=x(y+3x)`C. `2y(x+y)=xy`D. `y= pm 2x`
Answer» Correct Answer - A

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