Download the app

Questions  

 Let two points be A(1,-1) and B(0,2) . If a point Px',y' be such that the area of 

ΔPAB=5 sq units and it lies on the line 3x+y-4λ=0, then a value of λ is : 

a
4
b
3
c
-3
d
1

detailed solution

Correct option is B

Area=120211-11x'y'1=5⇒-21-x'+y'+x'=±10⇒-2+2x'+y'+x'=±10⇒3x'+y'=12 or 3x'+y'=-8⇒λ=3,-2

Talk to our academic expert!

+91

Are you a Sri Chaitanya student?


Similar Questions

A rectangular billiard table has vertices at P0,0,Q0,7,R10,7, and S10,0. A small billiard ball starts at M3,4moves in a straight line to the top M3,4, moves in a straight line to the top of the table, bounces to the right side of the table, and then comes to rest at N7,1. The y-coordinate of the point where it is the right side is 

 


phone icon
whats app icon