If a , b , c are the direction ratios of a line joining the points 4 , 3 , - 5 and - 2 , 1 , - 8 then the…

If a,b,c are the direction ratios of a line joining the points 4,3,-5 and -2,1,-8 then the point Pa,3 b,2c lies on the plane
  1. x+y+z=0
  2. x+y-2z=0
  3. x+2y+3z=0
  4. x-2y+3z=0

Solution

Given a,b,c are the direction ratios of a line joining the points 4,3,-5 and -2,1,-8,

So a=4--2=6b=3-1=2 and c=-5--8=3

Now putting the value of a, b & c in the point Pa,3 b,2c we get P6, 6, 6,

Now checking in all options in which P6, 6, 6 will lie,

We get x+y-2z=0 in which the given point lies.

Asked in: AP EAMCET 2022 (04 Jul Shift 1)

Practice more Three Dimensional Geometry questions on Aicharya