Which of these is likely to be his next step in constructing the perpendicular line?

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Need on this geometry question. explain how you did it.

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?