1. **State the problem:** Determine if the transformation from triangle $\triangle GHJ$ to $\triangle G'H'J'$ is a dilation and find the scale factor.
2. **Given points:**
- $H(-8,8)$, $G(6.5,5.5)$, $J(7.5,-7.5)$
- $H'(-4,4)$, $G'(3.25,2.75)$, $J'(3.75,-3.75)$
3. **Formula for scale factor in dilation:**
$$k = \frac{\text{image coordinate}}{\text{pre-image coordinate}}$$
4. **Calculate scale factors for each vertex:**
- For $H$ to $H'$:
$$k_H = \frac{-4}{-8} = \frac{1}{2}, \quad k_H = \frac{4}{8} = \frac{1}{2}$$
- For $G$ to $G'$:
$$k_G = \frac{3.25}{6.5} = \frac{1}{2}, \quad k_G = \frac{2.75}{5.5} = \frac{1}{2}$$
- For $J$ to $J'$:
$$k_J = \frac{3.75}{7.5} = \frac{1}{2}, \quad k_J = \frac{-3.75}{-7.5} = \frac{1}{2}$$
5. **Interpretation:**
All scale factors are consistent and equal to $\frac{1}{2}$.
6. **Conclusion:**
The transformation is a dilation with scale factor $k=\frac{1}{2}$, confirming the smaller triangle is a scaled version of the original.
**Final answer:** The transformation from $\triangle GHJ$ to $\triangle G'H'J'$ is a dilation with scale factor $\boxed{\frac{1}{2}}$.
Triangle Dilation B17Cb1
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