Master Chapter 3.2 of SEBA Class 9 Mathematics (Coordinate Geometry) with detailed step-by-step solutions, key formulas, and tips designed to help you score 100% in your Assam Board exams.

📘 Quick Summary & Chapter Info:

• Board: SEBA (Board of Secondary Education, Assam)
• Class: Class 9
• Subject: Mathematics
• Chapter: Chapter 3 – Coordinate Geometry (স্থানাংক জ্যামিতি)
• Exercise: 3.2 Solutions
• Medium: English & Assamese Medium

SEBA Class 9 Exercise 3.2 Latest Sylabus 2026-27

Question 1

Write the answer of each of the following questions:

(i) What is the name of horizontal and the vertical lines drawn to determine the position of any point in the Cartesian plane?

(ii) What is the name of each part of the plane formed by these two lines?

(iii) Write the name of the point where these two lines intersect.

Ans:-

(i) Horizontal line: x-axis

Vertical line: y-axis

(ii) Quadrant (The two axes divide the plane into four regions/parts called quadrants: I, II, III, and IV).

(iii) Origin (denoted as O or (0,0)).

2. See Fig.3.14, and write the following:

(i) The coordinates of B.

(ii) The coordinates of C.

(iii) The point identified by the coordinates (-3, -5).

(iv) The point identified by the coordinates (2, -4).

(v) The abscissa of the point D.

(vi) The ordinate of the point H.

(vii) The coordinates of the point L.

(viii) The coordinates of the point M.

Ans:-

(i) The coordinates of B = (-5, 2)

(ii) The coordinates of C = (5, -5)

(iii) The point identified by the coordinates (-3, -5) = Point E

(iv) The point identified by the coordinates (2, -4) = Point G

(v) The abscissa of the point D = 6

(vi) The ordinate of the point H = -3

(vii) The coordinates of the point L = (0, 5)

(viii) The coordinates of the point M = (-3, 0)

Q.3 The point (-a, b) where a > 0, b > 0 lies in
(a) Ist Quadrant
(b) IInd Quadrant
(c) IIIrd Quadrant
(d) IVth Quadrant

Answer: (b) IInd Quadrant

Q.4

The point (-3, 0) lies
(i) On the x-axis
(ii) In the 2nd quadrant
(iii) On the y-axis
(iv) At a distance 3 unit from origin
(a) Both (i) and (iv) are correct
(b) Both (i) and (ii) are correct
(c) Both (iii) and (iv) are correct
(d) Both (ii) and (iii) are correct

Answer: (a) Both (i) and (iv) are correct

Q.5 Consider the following two statements and then choose the correct option from the given alternatives.

(i) The co-ordinates of a point symetric to (9, 5) about the y-axis are (-9, 5).

(ii) The mid point of (2, 0) and (10, 0) is (6, 0).

(a) Both (i) and (ii) are true

(b) Both (i) and (ii) are false

(c) Only (i) is true

(d) Only (ii) is true

Answer: (a) Both (i) and (ii) are true

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💡 Finished Chapter 3.2? What’s Next?

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