Math Problem Statement
Solution
To determine which graph corresponds to the quadratic function , we need to analyze the function's properties.
First, we find the vertex of the parabola. The vertex form of a quadratic function has its vertex at where .
For :
So,
Next, we calculate the y-coordinate of the vertex by substituting back into the function:
Thus, the vertex of the parabola is .
Next, we check the y-intercept of the function, which is the constant term . This means the graph will cross the y-axis at .
Now, we analyze the given graphs:
- Graph A: Vertex is not at .
- Graph B: Vertex is at and the y-intercept is .
- Graph C: Vertex is not at .
- Graph D: Vertex is not at .
Graph B is the only graph that correctly shows the vertex at and the y-intercept at .
Therefore, the answer is:
Do you want details or have any questions? Here are five more questions you might ask:
- How do you determine the vertex of a quadratic function?
- What are the key features to look for when graphing a quadratic function?
- How do you find the axis of symmetry of a parabola?
- How can you find the roots of a quadratic function using the quadratic formula?
- What is the significance of the discriminant in a quadratic equation?
Tip: When analyzing the graph of a quadratic function, always identify the vertex and y-intercept to confirm its correct placement on the coordinate plane.
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Math Problem Analysis
Mathematical Concepts
Quadratic Functions
Vertex Form
Coordinate Geometry
Formulas
Vertex form of a quadratic function: y = ax^2 + bx + c, where the vertex is at (h, k) and h = -b / (2a)
Theorems
-
Suitable Grade Level
High School
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