Question 295765
find slope then slope intercept
know your equations {{{m=(y-y)/(x-x)}}} {{{y=mx+b}}}
{{{m=(y-y)/(x-x)}}}
{{{m=(-1-5)/(3-(-1))}}}
{{{m=(-6)/(4)}}}
{{{m=-3/2}}} 
use the slope to find the intercept
{{{y=mx+b}}} insert knowns for m, x, y
{{{-1=(-3/2)3+b}}multiply
{{{-1=(-9/2)+b}}} add -9/2
{{{(-9/2)+(-2/2)=b}}}
{{{(-11/2)=b}}}
rewrite formula
{{{y=mx+b}}}
{{{y=(-9/2)x+(-11/2)}}}
{{{highlight(y=(-9/2)x-11/2)}}}