The two quantities are in proportion. Find the missing value (plz help)

These question are hard can you me with answers

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

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36