Question 1184968


 P({{{-2}}},{{{3}}}), Q({{{8}}},{{{-5}}}) 

{{{PQ = sqr(164)}}} and 
midpoint of PQ is sqr(41)


Find coordinates of 

R({{{x}}}, {{{y}}}) if {{{Q}}} is midpoint of {{{PR }}}


P({{{-2}}},{{{3}}}).......................Q({{{8}}},{{{-5}}}) .......................R({{{x}}}, {{{y}}})


{{{Q }}}is midpoint

({{{8}}},{{{-5}}})=({{{(-2+x)/2}}},({{{3+y)/2}}})

{{{(-2+x)/2=8}}}
{{{-2+x=16}}}
{{{x=16+2}}}
{{{x=18}}}

{{{(3+y)/2=-5}}}
{{{3+y=-10}}}
{{{y=-10-3}}}
{{{y=-13}}}

R ({{{18}}}, {{{-13}}})