It's the same reasoning as why insurance gives better deals to people of greater age.. They are seen to have more experience and be more "mature " to drive safer if you have more years driving your insurance goes down.. same concept
The answer is y=-3x+5
PS: you can use ph0t0math for rewriting equations, they’ve got a calculator function where you can just type it in! :)
Prescribing medicine is for doctors to do you can recommend otc meds not prescribe them
