PQ is a double ordinate of the parabola y2=4ax. Thelocus of the points – InterviewSolution

1.	PQ is a double ordinate of the parabola y2=4ax. Thelocus of the points of trisection of PQ is(a) 9y2=4ax(c) 9y2+4ax=0(b) 9x2= 4ay(d) 9x2+4ay=0
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