Whats 9×9 how do you get the answer

Me asap! what is the slope of this line? enter your answer in the box.

Do, h = (7, 9) (14, 18) the scale factor is

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?