Answers

The Brainliest Answer!
2015-03-28T11:21:13+05:30
Let the fixed part of monthly charge be x and the non - fixed part be y. If a be the number of days one has taken food in mess, we get :-
x + ay = Monthly Charge

According to question, a = 20 and monthly charge = 1000, we get :-
x + 20y = 1000
x = 1000 - 20y

Let y be 10, we get :-
x = 1000 - 20 x 10
= x = 1000 - 200  
= x = 800 [(800,10)]

Let y be 20, we get :-
x = 1000 - 20 x 20
= x = 1000 - 400
= x = 600 [(600,20)]
Thus the co-ordinates on the graph are (800,10) and (600,20).

Hope that helps !!
2 5 2
Plz pick it as best if it was helpful !! :)