15 points
question 9
a student finds the slope of the line between (14, 1) and (18, 17). she writes 1 - 17 over 18 - 14. what mistake did she make?

a.
she should have added the values, not subtracted them.

b.
she did not keep the order of the points the same in the numerator and the denominator.

c.
she mixed up the x- and y-values.

d.
she used y-values where she should have used x-values.

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?