If f is a function such that f(b)-f(a)/b-a=2, then which of the following statements must be true?

If you answer 2+2 you will get over 80 points

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.