1. **State the problem:** Graph the function $$y = |\log_2(3 - \frac{1}{2}x)| + 5$$ and show each transformation step by step.
2. **Recall the base function:** The base function is $$y = \log_2(x)$$ which has a vertical asymptote at $$x=0$$ and passes through $$(1,0)$$.
3. **Analyze the inside of the logarithm:** The argument is $$3 - \frac{1}{2}x$$.
4. **Find the domain:** Set $$3 - \frac{1}{2}x > 0$$ to keep the log defined.
$$3 > \frac{1}{2}x$$
$$\Rightarrow x < 6$$
So the domain is $$(-\infty, 6)$$.
5. **Rewrite the argument to see transformations:**
$$3 - \frac{1}{2}x = -\frac{1}{2}x + 3$$
This is a horizontal reflection and scaling of $$x$$, plus a horizontal shift.
6. **Find the horizontal shift:** Solve $$3 - \frac{1}{2}x = 1$$ (since $$\log_2(1) = 0$$ is the x-intercept of the base log function).
$$3 - \frac{1}{2}x = 1$$
$$\Rightarrow -\frac{1}{2}x = -2$$
$$\Rightarrow x = 4$$
So the graph crosses the x-axis at $$x=4$$.
7. **Transformations inside the log:**
- Horizontal reflection about the y-axis because of the negative coefficient.
- Horizontal scaling by factor $$2$$ (since coefficient is $$-\frac{1}{2}$$).
- Horizontal shift right by $$4$$ units.
8. **Apply the absolute value:** The output of the log is reflected above the x-axis, so all negative values become positive.
9. **Vertical shift:** The entire graph is shifted up by $$5$$ units.
10. **Summary of transformations:**
- Start with $$y = \log_2(x)$$.
- Reflect horizontally and scale: $$x \to 3 - \frac{1}{2}x$$.
- Take absolute value: $$y = |\log_2(3 - \frac{1}{2}x)|$$.
- Shift vertically up by 5: $$y = |\log_2(3 - \frac{1}{2}x)| + 5$$.
11. **Graph shape:**
- Vertical asymptote at $$x=6$$.
- The graph passes through $$(4,5)$$ because $$\log_2(1) = 0$$ and absolute value does not change zero.
- For $$x < 4$$, $$\log_2(3 - \frac{1}{2}x) > 0$$ so graph is above 5.
- For $$4 < x < 6$$, $$\log_2(3 - \frac{1}{2}x) < 0$$ but absolute value reflects it above 5.
12. **Final function for graphing:** $$y = |\log_2(3 - \frac{1}{2}x)| + 5$$.
This completes the transformations and explanation.
Log Absolute Transform Bb8975
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.