Statistics question-needs to show

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

Which of the following is an example of conditional probability