Question 74726
{{{5x+7y=b}}}Plug in (-3,4) into the first equation
{{{5(-3)+7(4)=b}}}Solve for b
{{{-15+28=b}}}
{{{b=13}}}
Now plug in (-3,4) into the 2nd equation
{{{m(-3)+(4)=22}}}
{{{-3m+4=22}}}
{{{-3m=18}}}
{{{m=-6}}}
So m=-6. Use this info to complete the system of equations
{{{5x+7y=13}}}
{{{-6x+y=22}}}
<p>
Check:
{{{5x+7y=13}}}if we plug in (-3,4) it should satisfy the sytem
{{{-6x+y=22}}}
{{{5(-3)+7(4)=13}}}
{{{-6(-3)+(4)=22}}}
{{{-15+28=13}}}
{{{18+4=22}}}
{{{13=13}}}works
{{{22=22}}}works