## Precalculus (6th Edition) Blitzer

Step 1. We can identify two vertical asymptotes as $x=\pm2$ Step 2. We can identify a horizontal asymptotes as $y=1$ Step 3. The function is even because $f(-x)=f(x)$ Step 4. We can find the x-intercepts as $x=\pm1$ Step 5. We can find the y-intercept as $y=\frac{1}{4}$ Step 6. We can identify the signs across the vertical asymptotes and zeros as $...(+)...(-2)...(-)...(-1)...(+)...(1)...(-)...(2)...(+)...$ Step 7. Based on the information above, we can graph the function as shown in the figure.