Question 994012: Find an equation of the line containing the given pair of points. (-2,-1)(-9,-4)
The equation of the line in slope-intercept form is y= ?
Please help me solve this problem.
Answer by KMST(5328)   (Show Source):
You can put this solution on YOUR website! If you have two points,  and  ,
you can find the slope,  , of the line connecting them as
 .
If you have the slope, , of a line and a point,  , on that line
(point can be the same as or ),
you can write the equation of that line in  form as
 .
If you have the equation of that line in form,
you can use algebra to transform that equation into an equivalent equation
for that line in  form by solving for  .
IN THIS CASE:
 and  , so
 , and  .
An equation for the line in form,
using point  , is
 <--> .
Solving for ,
<--> <--> <--> ,
gives you the one and only equation in form for that line.
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