AP State Syllabus AP Board 9th Class Maths Solutions Chapter 5 Co-Ordinate Geometry InText Questions and Answers.

## AP State Syllabus 9th Class Maths Solutions 5th Lesson Co-Ordinate Geometry InText Questions

**Do This**

Question

Describe the seating position of any five students in your classroom. [Page No. 108]

Solution:

Oral answer – depend on the classroom.

**Activity (Ring Game)**

Question

Have you seen ‘Ring game’ in exhibitions ? We throw rings on the objects arranged in rows and columns. Observe the following picture. [Page No. 108]

Complete the following table.

Solution:

Question

Is the object 3rd column and 4th row is same as 4th column 3rd row ?

Solution:

No

**Do This**

Question

Among the points given below, some of the points lie on X – axis. Identify them.

i) (0, 5) ii) (0, 0) iii) (3, 0) iv) (- 5, 0) v) (- 2, – 3) vi) (- 6,0) vii)(0,6) viii)(0, a) ix) (b, 0) [Page No. 114]

Solution:

The points (ii) (0, 0), (iii) (3, 0) (iv) (- 5, 0) (vi) (- 6, 0) and (ix) (b, 0) lie on X – axis.

**Try These**

Question 1.

Which axis the points such as (0, x), (0, y), (0, 2) and (0, – 5) lie on ? Why ? [Page No. 114]

Solution:

All the above points lie on Y – axis, since the X – coordinate of all these points is zero.

Question 2.

What is the general form of the points which lie on X – axis. [Page No. 114]

Solution:

The general form of points lying on X – axis is (x, 0).

**Do This**

Question

Plot the following points on a Cartesian plane.

1. B (- 2, 3) 2. L (5, – 8) 3. U (6, 4) 4. E (-3, – 3) [Page No. 120]

Solution:

**Do This**

Question

i) Write the co-ordinates of the points A, B, C, D and E. [Page No. 121]

ii) Write the co-ordinates of F, G, H, I and J.

Solution”

i) A(2, 9) ; B(5, 9); C(2, 6) ; D(5, 3) ; E(2, 3)

ii) F(- 6, – 2) ; G(- 4, – 5) ; H(- 3, – 7) ; I(- 9, – 7) ; J(- 8, – 5)

**Activity**

Question

Study the positions of different cities like Hyderabad, New Delhi, Chennai and Vishakapatnam with respect to longitudes and latitudes on a globe. [Page No. 123]

Solution:

Student Activity

**Creative Activity**

Question

Take a graph sheet and plot the following pairs of points on the axes and join them with line segments. [Page No. 123]

(1, 0) (0, 9) ; (2, 0) (0, 8) ; (3, 0) (0, 7) ; (4, 0) (0, 6) ;

(5, 0) (0, 5) ; (6, 0) (0, 4) ; (7, 0) (0, 3) ; (8, 0) (0, 2) ; (9, 0) (0, 1).

Try to complete the picture by using above points. What did you observe ?

Solution:

Student Activity