Tough and Tricky questions: Coordinate Geometry.
Line L contains the points (2,3) and (e,q). If q = 2, which of the following could be the equation of line m, which is perpendicular to line L?
Select:
A) 2x + y = ex + 7	B) 2x + y = –ex	C) x + 2y = ex + 7	D) y – 7 = x ÷ (e – 2)	E) 2x + y = 7 – ex
we need m=e-2, so we should gety=mx+bform in answer choices   (A) 2x+y=ex+7 =&gt; y=ex-2x+7 =&gt; y=x(e-2)+7. It is what we need   (B) 2x + y = –ex =&gt; y=-ex-2x =&gt; y=x(-e-2). Wrong   (C) x + 2y = ex + 7 =&gt; y=x(e-1/2)+7/2. Wrong   (D) y – 7 = x ÷ (e – 2) =&gt; y=(1/e-2)x+7. Wrong   (E) 2x + y = 7 – ex =&gt; y=-ex-2x+7 =&gt; y=x(-e-2)+7. Wrong   2x + y = ex + 7
<result>A</result>
Tough and Tricky questions: Coordinate Geometry.
Line L contains the points (2,3) and (e,q). If q = 2, which of the following could be the equation of line m, which is perpendicular to line L?