In this page we have *NCERT book Solutions for Class 9th Maths Linear equations in two variables* for
EXERCISE 4.4 on page 77. Hope you like them and do not forget to like , social share
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Give the geometric representations of y = 3 as an equation

(i) in one variable

(ii) in two variables

(i) The representation of the y=3 on the number line is shown in below figure where y=3 is treated as an equation in one variable

(ii) This can be treated as equation in two variable as

$ 0 \times x + y =3$

Drawing the graph by putting x=0 and x=1

So ,it is a line parallel to X-axis

Give the geometric representations of 2x + 9 = 0 as an equation

(i) in one variable

(ii) in two variables

(i) The representation of the $2x+9=0$ on the number line is shown in below figure where x=-9/2 =4.5 is treated as an equation in one variable

(ii) This can be treated as equation in two variable as

$ 2x + 0 \times y +9=0$

Drawing the graph by putting y=0 and y=2

So ,it is a line parallel to Y-axis

**Notes**-
**Ncert Solutions** **Assignments**

Given below are the links of some of the reference books for class 9 Math.

- Mathematics for Class 9 by R D Sharma One of the best book for studying class 9 level mathematics. It has lot of problems to be solved.
- Secondary School Mathematics for Class 9 by R S Aggarwal This is also as good as R.D. Sharma. Either this or the book by R.D. Sharma will do. I find book R.S. Aggarwal little bit more challenging than the one by R.D. Sharma.
- Pearson IIT Foundation Series - Maths - Class 9 Buy this book if you want to challenge yourself further and want to prepare for JEE foundation.
- Pearson IIT Foundation Physics, Chemistry & Maths combo for Class 9 Only buy if you are prepared to study extra topics and want to take your studies a step further. You might need help to understand topics in these books.

You can use above books for extra knowledge and practicing different questions.

Class 9 Maths Class 9 Science

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