negate the quantified statement ∃y(Q(y) ∧ ∀x¬R(x, y)) I cant remember if i am doing it correctly. I am having trouble finding the negation.
Hint:

$$\neg\forall x\; P(x) =\exists x\;\neg P(x)$$
$$\neg\exists x\; P(x) =\forall x\;\neg P(x)$$

And also:

$$\neg (P \wedge Q)=\neg P\vee \neg Q$$
The negation is simply

$$\forall y \;\;(\lnot Q (y) \lor \exists x : R (x,y)) $$

Once again I know who downvoted, so good night .