What is the mean absolute deviation of the data set 0, 0, 1, 2, 3, 3, 8, 9, 10

What term makes it inconsistent y=2x - 4

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

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?