If x= 3a^2/a^3 +1 & y= 3a/a^3 + 1 construct an equation connecting x & y which does not contain a.

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42