Question

The image of the point (-1, 3, 4) in the plane x-2y=0 is

• A. $(15,11,14)$
• B. $(-\frac{17}{3},-\frac{19}{3},1)$
• C. $(\frac{9}{5},-\frac{13}{5},4)$
• D. $(-\frac{17}{3},-\frac{19}{3},4)$

Answer 1

The correct option is C $(\frac{9}{5},-\frac{13}{5},4)$

$\frac{h+1}{1}=\frac{k-3}{-2}=\frac{p-4}{0}=-2\left(\frac{-1-6}{5}\right)(h,k,p)=(\frac{9}{5},-\frac{13}{5},4)$