I need help with this math problem

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

Determine if the equation defines y as a function of x: 2xy = 1. yes o no