Question 874615
What is "equal values" method?


Two equations show as formulas for y.
{{{-x+3=2x+9}}}
{{{-x-2x=9-3}}}
{{{-3x=6}}}
{{{x=-2}}}, one coordinate.
-
{{{y=2x+9}}}
{{{y=2(-2)+9}}}
{{{y=-4+9}}}
{{{y=5}}}, other coordinate.


<b>Answer ordered pair, (-2, 5)</b>.
Not the same as the ordered pair you were expecting.  Maybe that is why you could not reproduce the values which you expected.