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 intrsect.

Answer»

(i) In a Cartesian plane, to determine the position of any point, horizontal line is called x-axis. Vertical line is y

The y-coordinate is also called the ordinate. 

Horizontal line → xOx’ 

Vertical line → yOy’ 

(ii) The name of each part of the plane formed by these two lines is called Quadrant. 

I Quadrant → xOy 

II Quadrant → yOx’ 

III Quadrant → x’Oy’ 

IV Quadrant → y’Ox 

(iii) The name of the point where these two lines intersect is called origin. 

Coordinates of origin are (0. 0).



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