Plz help me this is a major grade 17 points

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

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

Two numbers have a sum of -19. one number is x. what expression represents the other number?