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Let us have four distinct collinear points  A,B,C  and D on the Cartesian plane. The point C  is such that AB/CB = 1/2 and the point D is such that DA/BA = 3 and DB/BA = 4.  If C = (0,4), D = (4,0)  and A = (x,y), what is the value of  2x + y?

 Oct 21, 2020
 #1
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2x + y = -4/7.

 Oct 21, 2020

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