1. **Problem statement:**
Find the minimum point of the curve $y = x^2 - 2x - 4$.
2. **Formula and rules:**
The minimum or maximum point of a quadratic function $y = ax^2 + bx + c$ occurs at $x = -\frac{b}{2a}$.
3. **Calculate the x-coordinate of the minimum:**
Here, $a = 1$, $b = -2$, so
$$x = -\frac{-2}{2 \times 1} = \frac{2}{2} = 1.$$
4. **Calculate the y-coordinate of the minimum:**
Substitute $x=1$ into the function:
$$y = 1^2 - 2 \times 1 - 4 = 1 - 2 - 4 = -5.$$
5. **Minimum point coordinates:**
The minimum point is at $(1, -5)$.
1. **Problem statement:**
Estimate the solutions to $x^2 - 2x - 4 = 0$ from the graph.
2. **Explanation:**
The solutions are the x-values where the graph crosses the x-axis.
3. **From the graph:**
The roots are approximately $-1.2$ and $3.2$ (to 1 decimal place).
1. **Problem statement:**
Find the minimum point coordinates of $y = x^2 - 2x - 4$.
2. **Answer:**
Minimum point: $(1, -5)$.
3. **Problem statement:**
Estimate the solutions to $x^2 - 2x - 4 = 0$.
4. **Answer:**
Solutions: $-1.2$, $3.2$ (to 1 decimal place).
"slug": "quadratic curve",
"subject": "algebra",
"desmos": {"latex": "y=x^2-2x-4","features": {"intercepts": true,"extrema": true}},
"q_count": 3
Quadratic Curve 8A4566
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