Question

n
equation in two variables. Draw its graph.
17. In a class, number of girls is x and that of
boys is y. Also, the number of girls is 15 more than
the number of boys. Write the given data in the form
of a linear equation in two variables. Also, represent
it graphically
. Find graphically the number of girls,
if the number of boys is 20.​

Answer 1

let, no. of girls=x

boys =y,

ATQ, girls =y+15

So, x=y+15.

x-y=15

when y is 1 then x =15+1=16

when you is 2 then x=15+2=17

similarly, for graph data is =

(16,1),(17,2),(18,3) ,(19,4).......