Math Problem Statement

answers only

Find the equation of the quadratic function f whose graph is shown below, with a vertex at (2, 5) and passing through the point (3, 2).

Solution

The graph appears to show a quadratic function with a vertex at (2, 5) and passing through the point (3, 2). The general form of a quadratic equation is:

f(x)=a(xh)2+kf(x) = a(x - h)^2 + k

where (h,k)(h, k) is the vertex of the parabola. Based on the graph, the vertex is (2,5)(2, 5), so we substitute h=2h = 2 and k=5k = 5:

f(x)=a(x2)2+5f(x) = a(x - 2)^2 + 5

Now, we use the point (3,2)(3, 2) to solve for aa. Substituting x=3x = 3 and f(x)=2f(x) = 2 into the equation:

2=a(32)2+52 = a(3 - 2)^2 + 5

Simplifying:

2=a(1)2+52 = a(1)^2 + 5 2=a+52 = a + 5 a=25=3a = 2 - 5 = -3

Thus, the equation of the quadratic function is:

f(x)=3(x2)2+5f(x) = -3(x - 2)^2 + 5

Let me know if you need further details or clarifications!

Here are some related questions for practice:

  1. How would the equation change if the vertex moved to (1, -3)?
  2. What is the role of the coefficient aa in determining the parabola's direction?
  3. How can you derive the equation of a parabola given its roots and vertex?
  4. How does the vertex form differ from the standard form ax2+bx+cax^2 + bx + c?
  5. How can the axis of symmetry of a parabola be determined from its equation?

Tip: The sign of aa determines whether the parabola opens upwards or downwards.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Functions
Vertex Form of a Parabola

Formulas

f(x) = a(x - h)^2 + k

Theorems

Quadratic Function Vertex Form

Suitable Grade Level

Grades 9-11