Find the value of y when x equals 17 -x+y=-27

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

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?