4. If PS is the median of the triangle with vertices 1P(2,2), Q(6,-1)

1.	4. If PS is the median of the triangle with vertices 1P(2,2), Q(6,-1) and R(7,3) then the equationof the line passing through (1-1) and parallelto PS (AIEEE 2014)1) 4x-7y-11-03) 4x+7y+3-02) 2x+9y+7-04) 2x-9y-11-0
Answer» coordinate of S=(13/2,1) slope of ps=(1-2)/13/2 -2)=(-1)/(9/2)=-2/9 Eq. of the line passing through (-1,1) and parallel to PS is y-1=(-2/9)(x+1) 9(y-1)=-2x-2 9y-9+2x+2=0 2x+9y-7=0 thank u sir

4. If PS is the median of the triangle with vertices 1P(2,2), Q(6,-1) and R(7,3) then the equationof the line passing through (1-1) and parallelto PS (AIEEE 2014)1) 4x-7y-11-03) 4x+7y+3-02) 2x+9y+7-04) 2x-9y-11-0

Answer»

coordinate of S=(13/2,1)

slope of ps=(1-2)/13/2 -2)=(-1)/(9/2)=-2/9

Eq. of the line passing through (-1,1) and parallel to PS is

y-1=(-2/9)(x+1)

9(y-1)=-2x-2

9y-9+2x+2=0

2x+9y-7=0

thank u sir