Question 185783
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A line passes through the point(x,y)=(-4,8)and has a slope of -7 . 
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Via Slope-Intercept Form: {{{y=mx+b}}}
{{{8=(-7)(-4)+b}}}
{{{8=28+b}}}
{{{b=8-28=-20}}}, Y-Intercept
Therefore, the line eqn follows---->{{{highlight(y=-7x-20)}}}
Std Form---->{{{highlight(7x+y+20=0)}}}
We see the graph,
{{{drawing(400,400,-10,10,-25,15,grid(1),graph(400,400,-10,10,-25,15,-7x-20),green(circle(-4,8,.15)))}}}
Thank you,
Jojo</pre>