Question 501169


{{{y+7x=4}}} 

(-1,?) ...given {{{x=-1}}}, find {{{y}}}

{{{y+7(-1)=4}}} 

{{{y-7=4}}} 

{{{y=4+7}}} 

{{{y=11}}} 

and(3,?) ...given {{{x=3}}}, find {{{y}}}

{{{y+7(3)=4}}} 

{{{y+21=4}}} 

{{{y=4-21}}} 

{{{y=-17}}}


 (-1,11) and(3,-17)