What is the equation of the line that passes through point (3, -1) and has a slope of 2?

Find the value of the variable and the length of each secant segment.

Describe the relationship between the angles of similar triangles and the sides of similar triangles

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?