Y= (3/x) - 4. You switch the X and Y and then get the Y by itself
Answer:
Only one solution 
Step-by-step explanation:

Multiply equation
by 

Now from equation 
equation

Put the value in equation 

hence only one solution exists
.
Distance of Foci = c
Then,
c = 4
As c^2 + b^2 = a^2
And, b = 3
Then us will have:
a^2 = 4^2 + 3^2
a^2 = 16 + 9
a^2 = 25
a = 5
The equation of ellipse to this question is:
x^2 / a^2 + y^2/b^2 = 1
Then,
x^2 / 25 + y^2 / 9 = 1