Question

If p is true and q is true, then ~ p--->~ q is always, sometimes or never true.

Answer 1

So if p is true then ~p is false, same argument goes for q.

The implication as a whole is only false if the premise is true but the consequent is wrong, in our case, both, the premise and the consequent are wrong, therefore the implication is true.

Answer 2

so if p is true then no mater what ~p means it the opposite of p