NCERT Solutions Class 9 Mathematics

Exercise 4.4

Q.1. Give the geometric representations of y = 3 as an equation

(i) in one variable (ii) in two variables

Q.2. Give the geometric representations of 2x + 9 = 0 as an equation (i) in one variable (ii) in two variables

NCERT Solutions Class 9 Mathematics

Exercise 4.4

Q.1. Give the geometric representations of y = 3 as an equation

(i) in one variable (ii) in two variables

Solution:

(i) We can write the equation in one variable as,

y = 3

And the geometric representation will be,

(ii) We can write the equation in two variable as,

0x + y - 3 = 0

It is represented as a line parallel to X-axis.

Q.2. Give the geometric representations of 2x + 9 = 0 as an equation (i) in one variable (ii) in two variables

Solution:

(i) We can write the equation in one variable as,

x = -$\frac{9}{2}$

And the geometric representation will be,

(ii) We can write the equation in two variable as,

2x + 0y + 9 = 0

It is represented as a line parallel to Y-axis.