Math Problem Statement

Use the vertex formula to find the vertex of the quadratic function f(x) = -x^2 + 6x - 10.

Solution

To find the vertex of the quadratic function f(x)=x2+6x10f(x) = -x^2 + 6x - 10 using the vertex formula, we can apply the following steps:

Step 1: Use the vertex formula

The vertex of a quadratic function f(x)=ax2+bx+cf(x) = ax^2 + bx + c is given by the formula: xv=b2ax_v = \frac{-b}{2a} Where aa and bb are the coefficients of the quadratic and linear terms, respectively.

In this case, the function is: f(x)=x2+6x10f(x) = -x^2 + 6x - 10 Thus, a=1a = -1 and b=6b = 6.

Step 2: Calculate xvx_v

Substitute a=1a = -1 and b=6b = 6 into the vertex formula: xv=62(1)=62=3x_v = \frac{-6}{2(-1)} = \frac{-6}{-2} = 3

Step 3: Calculate yvy_v

Now, substitute xv=3x_v = 3 into the original equation to find yvy_v: yv=f(3)=(3)2+6(3)10y_v = f(3) = -(3)^2 + 6(3) - 10 yv=9+1810=1y_v = -9 + 18 - 10 = -1

Step 4: Conclusion

The vertex of the function is (xv,yv)=(3,1)(x_v, y_v) = (3, -1).

Would you like further details on any part of the solution, or do you have any questions?

Here are some related questions you can explore:

  1. How does the sign of aa affect the direction of the parabola?
  2. What is the significance of the vertex in a quadratic function?
  3. Can you use completing the square to find the vertex for this function?
  4. How would the graph of this function change if the constant term changed?
  5. How is the axis of symmetry related to the vertex?

Tip: The vertex formula is derived from completing the square on a general quadratic equation!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Functions
Vertex of a Parabola

Formulas

Vertex Formula: x_v = -b / (2a)

Theorems

Vertex Theorem for Quadratic Functions

Suitable Grade Level

Grades 8-10