2j + 3 pls answer 10 pts

Listed below are the measured radiation absorption rates? (in w/kg) corresponding to 11 cell phones. use the given data to construct a no plot and identify the 5- number summary

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

Can someone tell me if this is perpendicular? !