Which number line can be used to find the distance between (4, -1) and (8, -1)? O
A+
++
-2 -1 0 1 2 3 4 5 6 7 8
+
-2 -1 0 1 2 3 4 5 6 7 8
++
-2 -1 0 1 2 3 4 5 6 7 8
-8 -7 -6 -5 4 -3 -2 -1 0 1 2

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?