Math Problem Statement

Use transformations of the graph of f(x) = x^2 to determine the graph of the given function g(x) = (x + 4)^2.

Solution

The given function is g(x)=(x+4)2g(x) = (x + 4)^2, and you are asked to use transformations of the graph of f(x)=x2f(x) = x^2 to determine the graph of g(x)g(x).

Step-by-Step Transformation:

  1. Starting with the basic function:

    • The base function is f(x)=x2f(x) = x^2, which is a standard parabola with its vertex at the origin (0,0)(0, 0) and opens upwards.
  2. Horizontal shift:

    • The function g(x)=(x+4)2g(x) = (x + 4)^2 involves a horizontal shift. When we add a value inside the parentheses like this (x+4x + 4), it causes a horizontal shift to the left by 4 units.
    • This means the vertex of the parabola, which was originally at (0,0)(0, 0), will now be at (4,0)(-4, 0).
  3. Shape and orientation:

    • The shape of the graph of g(x)g(x) remains the same as f(x)=x2f(x) = x^2. It is still a parabola opening upwards since the coefficient of (x+4)2(x + 4)^2 is positive.
    • There is no vertical stretch, compression, or reflection involved here, as the equation remains (x+4)2(x + 4)^2.

Summary:

  • The graph of g(x)=(x+4)2g(x) = (x + 4)^2 is a parabola that has been shifted 4 units to the left from the graph of f(x)=x2f(x) = x^2. The vertex of the new parabola is at (4,0)(-4, 0).

Would you like further details on this transformation or have any questions?

Here are some follow-up questions that might help expand your understanding:

  1. How would the graph change if the equation was g(x)=(x4)2g(x) = (x - 4)^2?
  2. What would happen if the equation included a vertical shift, like g(x)=(x+4)2+2g(x) = (x + 4)^2 + 2?
  3. How does a negative coefficient, such as g(x)=(x+4)2g(x) = -(x + 4)^2, affect the graph?
  4. How can you determine the axis of symmetry of the function g(x)=(x+4)2g(x) = (x + 4)^2?
  5. What is the effect of adding a coefficient in front of the squared term, such as g(x)=2(x+4)2g(x) = 2(x + 4)^2?

Tip: Horizontal shifts always move the graph in the opposite direction of the sign inside the function. For example, x+4x + 4 shifts left, and x4x - 4 shifts right.

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Math Problem Analysis

Mathematical Concepts

Algebra
Graph Transformations
Quadratic Functions

Formulas

f(x) = x^2
g(x) = (x + h)^2
Horizontal shift

Theorems

Quadratic function transformations

Suitable Grade Level

Grades 9-11