Above is a graph of the proportional relationship between calories and grams of fish.

Write an equation in the form y = kx that reflects this relationship where:

x = the amount of fish in grams

y = number of calories.

Students are selling raffle tickets for a school fundraiser. They collect $24 for every 10 raffle tickets they sell.

Write an equation in the form y = kx that reflects this relationship where:

M = the amount of money the students collect

R = the amount of tickets sold

(hint find the "unit rate" first)