Math Problem Statement

Describe the graph of the quadratic function: f(x) = 5(x - 3)^2 + 2.

Solution

Let's analyze the given quadratic function:

f(x)=5(x3)2+2f(x) = 5(x - 3)^2 + 2

This is a quadratic function in vertex form, f(x)=a(xh)2+kf(x) = a(x-h)^2 + k, where:

  • a=5a = 5 (the coefficient in front of the squared term),
  • h=3h = 3 (the horizontal shift),
  • k=2k = 2 (the vertical shift).

Key characteristics of the graph:

  1. Opens Upward or Downward:

    • Since a=5a = 5, which is positive, the parabola opens upward.
  2. Vertex:

    • The vertex is at the point (h,k)=(3,2)(h, k) = (3, 2).
  3. Maximum or Minimum:

    • Because the parabola opens upward, it has a minimum value at the vertex, not a maximum.

Thus, the graph opens upward and has a minimum value at (3,2)(3, 2).

The correct answer:

"Opens upward and has minimum value at (3, 2)."

Would you like further details on this explanation or any other aspects? Here are some questions you might consider:

  1. How do we derive the vertex form of a quadratic function?
  2. Why does the sign of aa determine whether the parabola opens upward or downward?
  3. How do we calculate the axis of symmetry from the vertex form?
  4. What does changing the value of kk (vertical shift) do to the graph of the function?
  5. How would the graph change if aa were negative?

Tip: In any quadratic equation, the vertex form f(x)=a(xh)2+kf(x) = a(x-h)^2 + k is very useful for quickly identifying the direction of the graph and the vertex point.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Equations
Graphing

Formulas

Vertex form of quadratic function: f(x) = a(x-h)^2 + k

Theorems

The direction of a parabola is determined by the sign of 'a' in the quadratic function.

Suitable Grade Level

Grades 8-10