1. **State the problem:** We are given a piecewise function:
$$f(x) = \begin{cases} -\frac{2}{3}x + 3, & x \leq -1 \\ 5, & x > -1 \end{cases}$$
We want to understand and solve for values or analyze this function.
2. **Analyze each piece:**
- For $x \leq -1$, the function is linear: $f(x) = -\frac{2}{3}x + 3$.
- For $x > -1$, the function is constant: $f(x) = 5$.
3. **Evaluate the function at the boundary $x = -1$:**
$$f(-1) = -\frac{2}{3}(-1) + 3 = \frac{2}{3} + 3 = \frac{2}{3} + \frac{9}{3} = \frac{11}{3} \approx 3.67$$
4. **Check continuity at $x = -1$:**
- Left limit: $\lim_{x \to -1^-} f(x) = f(-1) = \frac{11}{3}$
- Right limit: $\lim_{x \to -1^+} f(x) = 5$
Since $\frac{11}{3} \neq 5$, the function has a jump discontinuity at $x = -1$.
5. **Summary:**
- For $x \leq -1$, the graph is a line segment from $x = -7$ (or less) up to $x = -1$ with $f(x) = -\frac{2}{3}x + 3$.
- At $x = -1$, the function value is $\frac{11}{3}$.
- For $x > -1$, the function is constant at $5$.
This matches the description of the graph with two parts: a line segment on the left and a horizontal line on the right.
**Final answer:** The function is piecewise defined as above with a jump discontinuity at $x = -1$.
Piecewise Function 28279B
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.