Asap for all four questions. also explain the answer.

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?