Number of students = 18
Number of scoops allowed per student = 2
If we are to write the total number of scoops that all the students will recive in linear form:
let the total number represent y
A linear form has the form:
y = mx + c
In this question:
y = 2x
Since there is no constant, the c = 0
m= 2 scoops per person
x = number of persons
The constraint that can affect the equation is the number of scoops.
Since we are told each person will only have 2 scoops.
The constraint:
This is because we can't have negative number of scoops of ice-cream.