Consider the following: x²y² = 25. Find two explicit functions by solving the equation for y in terms of x.
Positive function: y₁ = ±√(25/x²)
Negative function:
a) y₁ = -√(25/x²)
b) y₁ = -√(x²/25)
c) y₁ = -5/x
d) y₁ = -5x