KC Sinha Mathematics Solution Class 11 Chapter 21 Straight Lines Exercise 21.2

Exercise 21.2

Page no 21.18

Question 1

Find the equation of the line which is parallel to

$x$ -axis and at a distance of 3 units below the

$x$ -axis.

Question 2

Find the equation of the line perpendicular to

$x$ -axis and passing through itr origin.

Question 3

Find the equation of the straight lines which are

(i) parallel to the

$x$ -axis at a distance of 5 units from it.

(ii) parallel to the

$y$ -axis and at a distance of 4 units from it towards negative side of

$x$ -axis.

Question 4

Find the equations of the straight lines which pass through

$(5,3)$ and are respectively parallel and perpendicular to the

$x$ -axis.

Question 5

Find the equation of the line which is parallel to

$y$ -axis and passes through the point

$(3,-4)$

Question 6

Find the equation of the line perpendicular to the

$x$ -axis and passing through the point

$(-1,-1)$ .

Question 7

Find the equation of the line parallel to

$x$ -axis and having intercept

$-2$ on

$y$ -axis.