What is the slope of the line containing (6,8) and (9,9)?

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6