1. **Problem Statement:**
We are given two functions:
$$f(x) = \frac{1}{3}x, \quad x \leq 3$$
and a function \(g(x)\) whose graph is a parabola opening upwards with vertex at the origin and passing through points (-1,1) and (1,1).
We need to sketch the graph of the composite function \(g(f(x))\).
2. **Understanding the Functions:**
- The function \(f(x) = \frac{1}{3}x\) is a linear function with slope \(\frac{1}{3}\) defined only for \(x \leq 3\).
- The function \(g(x)\) is a parabola with vertex at (0,0) and points (-1,1), (1,1), which matches the standard parabola \(g(x) = x^2\).
3. **Formula for Composite Function:**
The composite function \(g(f(x))\) means we substitute \(f(x)\) into \(g\):
$$g(f(x)) = (f(x))^2$$
4. **Substitute \(f(x)\) into \(g(x)\):**
$$g(f(x)) = \left(\frac{1}{3}x\right)^2 = \frac{1}{9}x^2$$
5. **Domain Consideration:**
Since \(f(x)\) is defined for \(x \leq 3\), the domain of \(g(f(x))\) is also \(x \leq 3\).
6. **Summary:**
- The graph of \(g(f(x))\) is a parabola opening upwards.
- It is vertically compressed by a factor of \(\frac{1}{9}\) compared to \(g(x) = x^2\).
- The domain is restricted to \(x \leq 3\).
7. **Final expression:**
$$\boxed{g(f(x)) = \frac{1}{9}x^2, \quad x \leq 3}$$
This is the graph to sketch on the blank coordinate grid.
Composite Function A90F4A
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