1. **State the problem:**
We need to find the vertical and horizontal asymptotes of the function $$q(x) = \frac{x - 2}{\sqrt{2x - 1}}$$ and then graph it.
2. **Vertical asymptotes:**
Vertical asymptotes occur where the denominator is zero or undefined, and the numerator is not zero at the same point.
The denominator is $$\sqrt{2x - 1}$$ which is defined only when $$2x - 1 > 0$$, so:
$$2x - 1 > 0 \implies x > \frac{1}{2}$$
At $$x = \frac{1}{2}$$, the denominator is zero, so check if the numerator is zero:
$$x - 2 = \frac{1}{2} - 2 = -\frac{3}{2} \neq 0$$
Thus, there is a vertical asymptote at $$x = \frac{1}{2}$$.
3. **Horizontal asymptotes:**
Horizontal asymptotes describe the behavior as $$x \to \infty$$ or $$x \to -\infty$$.
Since the domain is $$x > \frac{1}{2}$$, we only consider $$x \to \infty$$.
Evaluate the limit:
$$\lim_{x \to \infty} \frac{x - 2}{\sqrt{2x - 1}}$$
Rewrite the denominator:
$$\sqrt{2x - 1} = \sqrt{2x}\sqrt{1 - \frac{1}{2x}} = \sqrt{2x} \cdot \sqrt{1 - \frac{1}{2x}}$$
As $$x \to \infty$$, $$\sqrt{1 - \frac{1}{2x}} \to 1$$, so:
$$\lim_{x \to \infty} \frac{x - 2}{\sqrt{2x - 1}} \approx \lim_{x \to \infty} \frac{x}{\sqrt{2x}} = \lim_{x \to \infty} \frac{x}{\sqrt{2} \sqrt{x}} = \lim_{x \to \infty} \frac{\cancel{x}}{\sqrt{2} \sqrt{\cancel{x}}} = \lim_{x \to \infty} \frac{\sqrt{x}}{\sqrt{2}} = \infty$$
So, no horizontal asymptote as $$x \to \infty$$.
4. **Summary:**
- Vertical asymptote at $$x = \frac{1}{2}$$.
- No horizontal asymptote.
5. **Graph:**
The function is defined for $$x > \frac{1}{2}$$.
- As $$x \to \frac{1}{2}^+$$, denominator $$\to 0^+$$, numerator $$\to -\frac{3}{2}$$, so $$q(x) \to -\infty$$.
- As $$x \to \infty$$, $$q(x) \to \infty$$.
The graph starts near negative infinity just to the right of $$x=\frac{1}{2}$$ and increases without bound as $$x$$ grows.
Vertical Horizontal Asymptotes 981Def
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