Mr. Ledger buys a box of 24
2424 donuts for a lesson in his math class about circumference.
Write an equation for the number of donuts
y
yy that are left at the end of the day when
x
xx donuts are used during the lesson.

Last year, Mr. Ledger used
18
1818 donuts during the lesson. This year, he used
22
2222 donuts.
Place points on the graph to show how many donuts are left at the end of last year's lesson and this year's lesson.