Question

The graph shows a school's profit for selling lunches

on pizza day. What is the profit for selling 100
lunches? You must show your work.

Answer 1

150

Explanation:

the line is straight hence gradient is constant

change in y/change in x=gradient

(45-0)/(65-50)

G=3

lunches is x axis

3=(y-45)/(100-65)

(3x35)=y-45

105=y-45

105+45=y

y=150