Please help me will give brainliest if righf

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

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 type of graph would allow us to quickly see how many students between 100 and 200 students were treated?