Question 691718

{{{y+1=0}}}....if you compare this equation to standard form {{{ax+by=c}}} you can see that {{{a=0}}} and we do not have {{{x}}}

than in your case we have: 

{{{y+1=0}}}...->...{{{y=-1}}};so, we have a line parallel to {{{x-axis}}} which 

passes through {{{y=-1}}}


 {{{ graph( 600, 600, -6, 5, -10, 10, -1,-1) }}}