Question

let cost of pencil and eraser be rs x and rs y respectively. a girl pays rs 9 for 2 pencils and 3 erasers . write the given data in the form of a linear equation in two variables . also represent it graphically

Answer 1

no.of pencils are 2⇒cost of two pencils=2x
no.oferasers are 3⇒cost of three erasers=3y
hence 2x+3y=9 is the required equation

Answer 2

The total cost of 2 pencils is Rs 2X
The total cost of 3 erasers is Rs 3X
The girl pays Rs 9 for 2 pencils and 3 erasers
Therefpre, the required equation will be:-
2X+3Y=9