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On March 11, 2024, 11:35 AM

Exercise 4.4 - Chapter 4 Linear Equations In Two Variables class 9 ncert solutions Maths - SaraNextGen [2024]


Question 1:

Give the geometric representation of y = 3 as an equation

(I) in one variable

(II) in two variables

Answer:

In one variable, y = 3 represents a point as shown in following figure.

https://img-nm.mnimgs.com/img/study_content/curr/1/9/7/101/1860/Chapter%204_html_3cf828.jpg

In two variables, y = 3 represents a straight line passing through point (0, 3) and parallel to x-axis. It is a collection of all points of the plane, having their y-coordinate as 3.

https://img-nm.mnimgs.com/img/study_content/curr/1/9/7/101/1860/Chapter%204_html_m44ff3939.jpg

 

 

Question 2:

Give the geometric representations of 2x + 9 = 0 as an equation

(1) in one variable

(2) in two variables

Answer:

(1) In one variable, 2x + 9 = 0 represents a point https://img-nm.mnimgs.com/img/study_content/curr/1/9/7/101/1864/Chapter%204_html_m6670917f.gif as shown in the following figure.

https://img-nm.mnimgs.com/img/study_content/curr/1/9/7/101/1864/Chapter%204_html_m1bddde28.jpg

(2) In two variables, 2x + 9 = 0 represents a straight line passing through point (−4.5, 0) and parallel to y-axis. It is a collection of all points of the plane, having their x-coordinate as 4.5.

https://img-nm.mnimgs.com/img/study_content/curr/1/9/7/101/1864/Chapter%204_html_3b0593bb.jpg

Also Read : Exercise-5.1-Chapter-5-Introduction-To-Euclids-Geometry-class-9-ncert-solutions-Maths

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