Please answer hurry I’m times

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

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

Can someone tell me if this is perpendicular? !