Math Problem Statement

What is the vertex of y = x^2 - 4x - 10?

Solution

To find the vertex of the quadratic function y=x24x10y = x^2 - 4x - 10, we can use the formula for the vertex of a parabola in the form y=ax2+bx+cy = ax^2 + bx + c:

  1. The x-coordinate of the vertex is given by x=b2ax = -\frac{b}{2a}.
  2. The y-coordinate can be found by substituting this x-value back into the equation.

Here:

  • a=1a = 1
  • b=4b = -4
  • c=10c = -10

Step 1: Calculate the x-coordinate of the vertex

x=421=42=2x = -\frac{-4}{2 \cdot 1} = \frac{4}{2} = 2

Step 2: Substitute x=2x = 2 into the equation to find the y-coordinate

y=(2)24(2)10y = (2)^2 - 4(2) - 10 y=4810=14y = 4 - 8 - 10 = -14

Conclusion

The vertex is (2,14)(2, -14), which matches option B.

Would you like further details on this process, or do you have any additional questions?

Here are some related questions you might find useful:

  1. How do you determine the vertex of a quadratic function in general?
  2. What does the vertex represent in the graph of a parabola?
  3. How do you determine if a vertex is a maximum or minimum?
  4. What are other ways to find the vertex, like completing the square?
  5. How does changing the values of aa, bb, or cc affect the position of the vertex?

Tip: The vertex form of a quadratic equation, y=a(xh)2+ky = a(x - h)^2 + k, directly reveals the vertex as (h,k)(h, k).

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Functions
Vertex of a Parabola

Formulas

Vertex formula x = -b / (2a)

Theorems

Vertex form of a quadratic function

Suitable Grade Level

Grades 9-10