Question 423783

 Determine if (-2/3) is a solution to {{{-9x-2y=8}}}.

given:

{{{x=-2/3}}}


{{{-9x-2y=8}}}...plug in {{{x}}} and find {{{y}}}


{{{-9(-2/3)-2y=8}}}


{{{-cross(9)3(-2/cross(3))-2y=8}}}


{{{-3(-2)-2y=8}}}


{{{6-2y=8}}}


{{{6-8=2y}}}


{{{-2=2y}}}


{{{-1=y}}}

check:

plug in {{{x=-2/3}}} and {{{y=-1}}} and see if the left side of the equation is equal to right side

{{{-9(-2/3)-2(-1)=8}}}.

{{{6+2=8}}}.

{{{8=8}}}....it is a solution