Question 53962
The slope, m, of a line is defined as {{{m=(y[2]-y[1])/(x[2]-x[1])}}}.  So just substitute your ordered pairs into that equation to get {{{m=(-2-3)/(4+1)}}}, which simplifies to {{{m=-5/5}}} which reduces to m=-1.  That means our equation is y=-x+b in slope intercept form.  To find out what b is, substitute one of the ordered pairs.  Taking (-1,3) gives us 3=1+b, which reduces to b=2.  So our final equation is y=-x+2 and graphs to:
{{{graph(200,200,-5,5,-5,5,-x+2)}}}