I could only think @Zunayed_781038 was alluding to the lack of a White king in my previous diagram (which was deliberate). Perhaps he could explain; but in words of not too many syllables for @KieferSmith's benefit.
Can you mate with Queen and Bishop versus King?
Bye the way you can checkmate a black king thats in the center of the board in only 5 moves with a Queen and a King. Like this.
Not always. Try mating in 5 from here:
And you should be able to make it in 4 from here
Yes. King. And rectangle.