I have tried but doesn't work out well....(adsbygoogle = window.adsbygoogle || []).push({});

Find the point at which the normal through the point (3,-4) to the line 10x+4y-101=0 intersects the line.

Originaly I thought that it should be found by doing the dot product of:

(x-3,y+4)dot(-4/10,-10/4)= 0

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# Intersection of Two Lines

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