Math Problem Statement
Which coordinate pair is the vertex of y = x^2 + 4x + 1?
Solution
The equation provided is , which is a quadratic equation. The vertex of a parabola given by can be found using the formula for the x-coordinate of the vertex:
In this case, the equation is , where:
Now, let's find the x-coordinate of the vertex:
To find the y-coordinate, we substitute back into the equation:
So, the vertex is at .
Thus, the correct answer is .
Would you like more details or have any further questions?
Here are 5 related questions you might explore:
- How do you find the axis of symmetry for a quadratic function?
- What is the importance of the discriminant in a quadratic equation?
- How does the value of affect the direction of a parabola?
- Can you convert the quadratic equation into vertex form?
- How do you graph a quadratic function using its vertex and intercepts?
Tip: The vertex form of a quadratic equation is useful for identifying the vertex directly and is given by , where is the vertex.
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Math Problem Analysis
Mathematical Concepts
Algebra
Quadratic Equations
Parabolas
Formulas
x = -b / (2a)
y = ax^2 + bx + c
Theorems
Vertex formula for parabolas
Suitable Grade Level
Grades 9-11