Consider the function f(x) = x(x-4. If the point (2+c, y) is on the graph of f(x), the following point will also be on the graph of f(x):
A) (c-2,y)
B) (2-c, y)

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?