Question 52514
(8,7)and(2,-1)
find the slope by dividing rise to run.


{{{(7-(-1))/(8-2)}}}
{{{8/6}}}
{{{4/3}}}


so slope we found the slope. now we need to find y-intercept. choose one of the points and substitute with the x y values and substitute the m with the slope we have just found.


{{{y=mx+b}}}
{{{-1=4/3*2+b}}}
{{{-1=8/3+b}}}
{{{-11/3=b}}}


substitute the values we had found (slope, y-intercept)


{{{y=mx+b}}}
{{{y=4/3*x-11/3}}}