The graph approaches y = 0 as x → ±∞. What is the horizontal asymptote rule?

<p>What is the minimum degree of a polynomial whose graph looks like this?</p>

<p>Identify the function that has VA at x = 0 only.</p>

<p>Identify the conic: its branches open up and down.</p>

<p>Which equation matches this circle?</p>