If A, B, and C are colinear with B between A and C (you might want to draw a picture), AB = 7 and AC = 9, what is BC? 7

2

16

9

Which of the following points is collinear with (-2,1) and (0,3)

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?

Which of the following is not a subset of {1,2,3}?