Exercise 3.2
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 ?
Sol
Solution:
(i) Horizontal line is x- axis while the vertical line is the y -axis .
(ii) The two axes divide the plane into four quadrants.
(iii) Thw two axes intersect each other perpendicularly at the origin.
Question 2
- See Fig, 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
Sol
Solution:
(i)The coordinates of B are (-5,2).
(ii) The coordinates of C are (5,-5).
(iii) The point identified by the coordinates (–3, –5) is E.
(iv) The point identified by the coordinates (2, – 4) is G.
(v) The abscissa of the point D is 6.
(vi) The ordinate of the point H -3.
(vii) The coordinates of the point L is (0,5).
(viii) The coordinates of the point M is (-3,0).