Question 992641

 {{{x-2y=7}}}

{{{x}}}|{{{y}}}
{{{0}}}	|{{{-7/2}}}=> {{{0-2y=7}}}=> {{{-2y=7}}}=> {{{-7=2y}}}=>{{{y=-7/2}}}
{{{3}}}	|{{{-2}}}=> {{{3-2y=7}}}=> {{{3-7=2y}}}=> {{{-4=2y}}}=>{{{y=-2}}}
{{{7}}}	|{{{0}}}=> {{{x-2*0=7}}}=>{{{x=7}}}
{{{-3}}}|{{{-5}}}=> {{{x-2*(-5)=7}}}=>{{{x+10=7}}}=>{{{x=7-10}}}=>{{{x=-3}}}


plot points and draw a line through:

{{{drawing( 600, 600, -10, 10, -10, 10,
circle(0,-7/2,.12),circle(3,-2,.12),circle(7,0,.12),circle(-3,-5,.12),
 graph( 600, 600, -10, 10, -10, 10, x/2-7/2)) }}}