Home
Class 12
MATHS
if lambda x^2+10xy+3y^2-15x-21y+18=0 rep...

if `lambda x^2+10xy+3y^2-15x-21y+18=0` represents a pair of straight lines. Then , the value of `lambda` is

A

-3

B

3

C

4

D

-4

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PAIR OF STRAIGHT LINES

    ARIHANT MATHS|Exercise Exercise For Session 5|10 Videos

  • PAIR OF STRAIGHT LINES

    ARIHANT MATHS|Exercise Exercise (Single Option Correct Type Questions)|12 Videos

  • PAIR OF STRAIGHT LINES

    ARIHANT MATHS|Exercise Exercise For Session 3|9 Videos

  • MONOTONICITY MAXIMA AND MINIMA

    ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|31 Videos

  • PARABOLA

    ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|36 Videos

Similar Questions

Explore conceptually related problems

If kx^(2)+10xy+3y^(2)15x21y+18=0 represents a pair of straight lines then k=

If lambdax^(2)-10xy+12y^(2)+5x-16y-3=0 , represents a pair of straight lines, then the value of lambda is

a(x^(2)-y^(2))+xy=0 represents a pair of straight lines for

If lambda x^(2)+6xy+9y^(2)+4x+12y+3=0 represents a pair of straight lines then lambda

If the equation lambdax^2+2y^2-5xy+5x-7y+3=0 represents two straight lines , then the value of lambda will be

If 6x^2+11xy-10y^2+x+31y+k=0 represents a pair of straight lines , then k is equal to.

If the equation 12x^(2)-10xy+2y^(2)+11x-5y+lambda=0 represents a pair of straight lines then the value of 221 lambda^(2)+361 lambda+582 is equal to

If the equation 3x^(2)+xy-y^(2)-3x+6y+k=0 represents a pair of straight lines, then the value of k, is