Question

If the equation  represents a pair of lines, then is equal to

Solution

Correct option is

4

 

We have, 

      

This will represent a The Pair of Straight Lines, if  

      

.

SIMILAR QUESTIONS

Q1

The product of perpendiculars let fall from the point (x1y1) upon the lines represented by ax2 + 2hxy + by2, is

Q2

 

The angle between the The Pair of Straight Lines

        

Q3

The pair of lines represented by 3ax2 + 5xy + (a2 – 2)y2 = 0 are perpendicular to each other for 

Q4

 

The angle between the pair of lines represented by 2x2 – 7xy + 3y2 = 0, is   

 

Q5

The angle between the lines represented by , is

Q6

If the angle θ is acute, then the acute angle between 

Q7

If θ is the acute angle between the lines given by x2 – 2pxy + y2 = 0, then,

Q8

If the coordinates axes are the bisectors of the angles between the pair of lines ax2 + 2hxy + by2 = 0, then

Q9

 bisect angles between each other, then

Q10

The equation y2 – x2 + 2x – 1 = 0 represents.