23. { (2, 6), (-3, 6), (4,9), (2, 10) } 24. {(-2,5), (-1,3), (3, 7), (4, 12)} 25. { (1,3), (2,3), (3, 3), (4, 3) } 26. { (0, –2), (1,3), (2,3), (3, 7) } 27. {(-2,4), (–2, 6), (0, 3), (3,7) } 28. {(-4,4),(-3, 3), (-2,2), (–1,1), (-4,0)} 29. { (-2,4), (–1, 1), (0,0), (1, 1) } 30. { (-2, 16), (-1,4), (0,3), (1,4) }

3. Use set notation to describe the domain and range of the following functions: f(x) = -3 /|x +2| a. b. g(x) = V3x-1 +5

1. Graph the following function on the coordinate plane. y = -x² - 8x - 17 y

Consider three independent tosses of a fair coin (so all eight possible outcomes are equally likely). Let X be the number of heads, Y be the number of tails out of the three tosses. Let Z be the number of heads out of the first two tosses. Can Z be written as a function of X? If yes, identify the function. If no, explain why.