SOLUTION: a triangle, STR ... s=(-4,7) t= (4,7)r=(0,1), and they're asking me to write an equation that contains the median of triangle RST from S to side RT. HELP!!!!!!!!!!!!!!!!!!!!!!!!!

Question 322502: a triangle, STR ... s=(-4,7) t= (4,7)r=(0,1), and they're asking me to write an equation that contains the median of triangle RST from S to side RT. HELP!!!!!!!!!!!!!!!!!!!!!!!!!
Answer by Edwin McCravy(20086) (Show Source): You can put this solution on YOUR website!




A median is a line segment drawn from a vertex to the midpoint of
the opposite side. 

So first let's find the midpoint of the side RT, using the
midpoint formula:

 

Let's call that point M for "Midpoint". So we plot M(2,4):

 

Now we draw the line segment SM, which is the median. I'll draw it
in red:

 

and we want to find the equation of the line that contains that median.

That is, we want to find the equation of the line through the points 
S(-4,7) and M(2,4).  That's the red line:





Use the slope formula: 



Use the point-slope formula:









Edwin