Question

Yamini and Fatima of class IX together contributed `Rs.200/- towards the Prime Minister’s Relief Fund. Express the given statement as a linear equation in two variables.

Answer 1

In this question I have taken the contribution as ₹100 of Yamini & Fatima. I have drawn the graph also.Table and Graph are in the attachment..

SOLUTION:

Let the contributions of Yamini and Fatima together towards the Prime Minister relief fund to help the earthquake victims are ₹x and ₹y. 

A.T.Q

linear equation in two variables :

x+y=100......(1)

Here,We plot the points B(0,100) & A(100,0) on  graph paper and join all these points to form a line AB.

** It is enough to plot two points Corresponding to two solutions and join them by a line.

Hence, the linear equation in two variables x+y=100.

HOPE THIS WILL HELP YOU ..

Answer 2

Hi,

Solution:

As in the question how much yamini alone contribute and Fatima alone contribute not given.

So,let us assume that Yamini's contribution is x rupees,
and so Fatima contribution is y rupees.

A.T.Q.
Total contribution by both of them is INR 200/-

so, equation would be
$x + y = 200$
How to make graph:

To make graph write the equation in the form of one's contribution

$x = 200 - y$
Now,1) put y = 100
x = 200-100 = 100

2) put y = 150

x = 200-150 = 50

3) put y= 80

x = 200-80 = 120

Take these points and draw the graph.

Hope this helps you.