Math Problem Statement

Write an equation (any form) for the quadratic graphed below.

Solution

The image shows a question asking to "Write an equation (in any form) for the quadratic graphed below." The quadratic graph appears to have a vertex at approximately (3,4)(-3, -4) and passes through points like (4,0)(-4, 0) and (2,0)(-2, 0), suggesting a standard quadratic form.

Approach:

The vertex form of a quadratic equation is:

y=a(xh)2+ky = a(x - h)^2 + k

Where:

  • (h,k)(h, k) is the vertex of the parabola.
  • aa is the coefficient determining the "width" and direction of the parabola.

From the graph:

  • The vertex is at (3,4)(-3, -4), so h=3h = -3 and k=4k = -4.
  • The parabola opens upwards.

We can use one of the intercepts, (4,0)(-4, 0), to find aa:

  • At x=4x = -4, y=0y = 0.

Substituting into the vertex form equation: 0=a(4+3)240 = a(-4 + 3)^2 - 4 0=a(1)240 = a(1)^2 - 4 a=4a = 4

Thus, the equation in vertex form is: y=4(x+3)24y = 4(x + 3)^2 - 4

Would you like further explanation on any part of the process or conversion to other forms (like standard form)?

Here are 5 related questions to explore:

  1. What is the standard form of a quadratic equation?
  2. How does the value of aa affect the shape of the parabola?
  3. What are the advantages of using vertex form over standard form?
  4. How can you find the roots of the equation from this form?
  5. How would the graph change if the value of aa was negative?

Tip: Always double-check the vertex and intercepts from a graph before writing the equation.

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Math Problem Analysis

Mathematical Concepts

Quadratic Equations
Graphing Quadratics
Vertex Form

Formulas

Vertex form: y = a(x - h)^2 + k
Standard form: y = ax^2 + bx + c

Theorems

Quadratic Equation Properties
Roots of Quadratics (Intercepts)

Suitable Grade Level

Grades 9-10