Question 404564
*[invoke solve_by_graphing 1, 1, 10, 1, -1, 12]



graph (one more time)

{{{x+y=10}}}........in standard form..=>...{{{y= -x +10}}}

{{{x-y=12}}}........in standard form..=>...{{{y=x-12}}}



{{{ graph( 500, 500, -10, 15, -10, 20, -x +10, x-12) }}}