1. **State the problem:**
Match each quadratic equation in vertex form to its verbal description by identifying the vertex $(h,k)$ and the value of $a$.
2. **Recall the vertex form:**
$$y = a(x - h)^2 + k$$
- $(h,k)$ is the vertex.
- $a$ determines the parabola's direction and stretch/compression.
- If $a > 0$, parabola opens up; if $a < 0$, it opens down.
- $|a| > 1$ means vertical stretch; $0 < |a| < 1$ means vertical compression.
3. **Analyze each equation:**
**Equation 2:** $y = (x - 4)^2 + 2$
- Vertex: $(4, 2)$
- $a = 1$ (opens up, no stretch/compression)
- Matches description D: Shifted right 4 units and up 2 units.
**Equation 3:** $y = - (x + 2)^2 + 6$
- Rewrite vertex: $x + 2 = x - (-2)$, so vertex is $(-2, 6)$
- $a = -1$ (opens down, reflected over x-axis)
- Matches description B: Reflected over the x-axis, shifted left 2 units, and up 6 units.
**Equation 4:** $y = 3(x - 6)^2 - 1$
- Vertex: $(6, -1)$
- $a = 3$ (opens up, vertically stretched by factor 3)
- Matches description C: Vertically stretched by a factor of 3, shifted right 6 units, and down 1 unit.
**Equation 5:** $y = \frac{1}{4}(x + 1)^2 - 7$
- Vertex: $(-1, -7)$
- $a = \frac{1}{4}$ (opens up, vertically compressed by factor 1/4)
- Matches description E: Vertically compressed by a factor of 1/4, shifted left 1 unit, and down 7 units.
**Equation 6:** $y = -3(x - 4)^2 - 2$
- Vertex: $(4, -2)$
- $a = -3$ (opens down, reflected and vertically stretched by factor 3)
- Matches description F: Reflected over the x-axis, vertically stretched by a factor of 3, shifted right 4 units, and down 2 units.
**Equation 7:** $y = (x + 2)^2 - 6$
- Vertex: $(-2, -6)$
- $a = 1$ (opens up, no stretch/compression)
- Matches description A: Shifted left 2 units and down 6 units.
4. **Final matches:**
- 2: D
- 3: B
- 4: C
- 5: E
- 6: F
- 7: A
Vertex Form Matching A300Dc
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