Geometry work please help

Select the correct answer and solve for y

Which graph of a hyperbola represents the equation 16x^2-y^2=16

Fill in the missing exponents in each box and show how you found the answer. (4 points: 2 points for each correct answer with work shown) c. (9^4)^? =9^1 d.(5^? )^3=5^1 *question marks represent the boxes