Graph the lines y = 3x and y = x in the first quadrant (both x and y greater than or equal to 0). If y = kx bisects the angle between the lines, as shown, what is the value of k equal to?
A square is in the first quadrant, as shown, with its sides extending to points on the x-axis of (3, 0), (5, 0), (7, 0) and (13, 0). What is the area of the square?
