1. **Problem Statement:**
Match the descriptions of the parabolas to their graphs and estimate the roots from the graphs.
2. **Understanding Roots of Quadratic Functions:**
A quadratic function is generally written as $$y = ax^2 + bx + c$$.
The roots (or zeros) are the values of $x$ where $y=0$.
3. **Key Rules:**
- If the parabola touches the x-axis at exactly one point, it has a repeated root (also called a double root).
- If the parabola crosses the x-axis at two points, it has two distinct roots.
- If the parabola does not cross the x-axis, it has no real roots.
4. **Graph 1 Analysis:**
- Parabola opens upwards.
- Vertex is around $(1,0)$.
- Crosses x-axis at $x \approx 1$ with a repeated root.
5. **Graph 2 Analysis:**
- Parabola opens upwards.
- Vertex is below the x-axis.
- Crosses x-axis at two points: $x \approx -2$ and $x \approx 3$.
6. **Graph 3 Analysis:**
- Parabola opens upwards.
- Vertex is above the x-axis.
- Does not cross the x-axis, so no roots.
**Final answers:**
- Repeated roots: $x = 1$
- Two roots: $x = -2$ and $x = 3$
- No roots: none
This matches the descriptions given for each graph.
Roots From Graphs 702D03
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.