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# If one of the lines in the pair of straight lines given by $4x^2+6xy+ky^2=0$ bisects the angle between the coordinate axes, then $k \in$

$\begin {array} {1 1} (a)\;(-2,-10) & \quad (b)\;(-2,10) \\ (c)\;(-10,2) & \quad (d)\;(2,10) \end {array}$

Can you answer this question?

(c) (-10,2)
answered Nov 7, 2013 by