13 m/s = /hr 780 13,000 4.68 46,800 529 g = kg 5.29 x 105 0.529 0.000529 5.29 x 103 500 km = 500,000 50,000,000 < < < < 0.005 5

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?