Question 45913
{{{x + y = -9}}}
{{{y = -x - 9}}}
plug:
{{{x - y = 14}}}
{{{x - (-x - 9) = 14}}}
{{{x + x + 9 = 14}}}
{{{2x = 5}}}
{{{x = 5/2}}}
plug:
{{{x + y = -9}}}
{{{5/2 + y = -18/2}}}
{{{y = -23/2}}}
(2.5,-11.5)
{{{ graph(600,600,-10,10,-12,8,-x-9,x-14) }}}