I'm so confused, our teacher assigned this but dident teach us how to do it

Multiplying an even number of negative numbers gives an answer that is choose from:

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at __ link to graph: .