GSEB Class 9 Maths Solutions Chapter 3 Coordinate Geometry Exercise 3.2

Question 1. Write the answer of each of the following questions.
1. What is the name of the horizontal and vertical lines drawn to determine the position of any point in the Cartesian plane?
2. What is the name of each part of the plane formed by these two lines?
3. Write the name of the point where these two lines intersect.
Answer:
1. The horizontal line is the x-axis, and the vertical line is the y-axis.
2. The plane's parts are called Quadrants.
3. These two lines meet at the origin.
In simple words: The horizontal line is called the x-axis, and the vertical line is called the y-axis. They divide the plane into four quadrants, and they cross each other at a point known as the origin.

Exam Tip: Remember these fundamental terms for coordinate geometry: x-axis, y-axis, quadrants, and origin. Knowing them is crucial for understanding the Cartesian plane.

Question 2. See figure 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.
(ix) The coordinates of the point M.
Answer:
(i) The coordinates for point B are (-5, 2).
(ii) Point C's coordinates are (5, -5).
(iii) The point represented by (-3, -5) is E.
(iv) The point shown by (2, -4) is G.
(v) The abscissa (x-coordinate) of point D is 6.
(vi) The ordinate (y-coordinate) of point H is -3.
(vii) The coordinates for point L are (0, 5).
(ix) The coordinates for point M are (-3, 0).
In simple words: Look at the picture to find each point. Write down its x and y numbers in order. The x-value is the abscissa, and the y-value is the ordinate.

Exam Tip: To get full marks, always double-check your coordinates directly from the figure provided. Remember that the abscissa is the x-coordinate and the ordinate is the y-coordinate.