Is 4/0 an undefined slope or 0

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.

What is the ordered pair that represents the linear inequality y< 6x-4

Acircle has a radius of 17. approximately what is the area of the circle