00:01
In this question, the vertices of a triangle are p minus 4 .2, q is 0 .6, and r is 7.
00:08
Minus 2.
00:09
So that is r.
00:11
So assuming that, this is the projection.
00:16
And we have three questions to answer.
00:19
The given fact that the equation of the median from vertex p is y equals to 2.
00:24
And we have question a, find the equation of the median from vertex r.
00:28
So basically if you drew a vertex from r i'm drawing it the reverse way so that's easier for just the sake of drawing so that would meet at point s so s will bisect the median basically would bisect at s bisect pq s therefore what they're asking us is to find the equation of the median from s so as far as part a is concerned we need to find the equation equation for r s the line r s so what we can do is first of all find the midpoint so i'm going to be naming p as x1 comma y1 q as x2 comma y2 or r as x2 or as x3 comma y1 y3 and s as x4 comma y4 so i need to find out the values of x4 comma y4 so what we can do is i can say that the midpoint which is basically s is given by the midpoint formula which would say x1 plus x2 divided by 2 comma y1 plus y2 divided by 2 so that's the standard for blah for the midpoint formula so using this i can say s would have coordinates minus 4 plus 0 just applying what x1 is.
02:20
So you can see that x1 is minus 4.
02:23
X2 is obviously 0.
02:24
Divide that by 2 because of the formula.
02:29
Y1 obviously will have to look.
02:31
Y1 value is 2.
02:33
Y 2 value is 6.
02:37
So 2 plus 6 is 8 by 2.
02:41
So that would be, the answers would be, s will have the coordinates minus 2, comma, 4...