They want you to use the dots to help yourself draw the picture of the cubes. This is not really a question anyone can help you answer as you just have to draw the picture. the dots are just to help make it easier than just drawing by hand.
I think #1 is -1/2 but im not sure i dont know about the other answers
(x+4)^2 / 9 - (y+3)^2 / 16 = 1
a^2 = 16 and b^2 = 9
a = +4 and -4
b = +3 and -3
Center is (-4, -3)
Vertices is (-4 + a, -3) and (-4 - a, -3)
Vertices is (-1, -3) and (-7, -3)
