How many dollars more is the price of a bannock burger than the price of a popover at hugo's store?

number
of popovers price of popovers
(dollars)
3 12
6 24
9 36
12 48

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?