Math Problem Statement

The graph above is a transformation of the function f(x) = |x|. Write an equation for the function graphed above.

Solution

The graph shown in the image is a transformation of the function f(x)=xf(x) = |x|, which is a V-shaped graph with a vertex at the origin. Let's analyze the given transformation.

Observations:

  • The original vertex of f(x)=xf(x) = |x| is at the origin, but in this graph, the vertex has shifted.
  • The vertex of this new graph appears to be at (2,3)(-2, -3), which indicates a horizontal shift by 2 units to the left and a vertical shift by 3 units down.
  • The slope of the graph on both sides of the vertex is the same as f(x)=xf(x) = |x|, meaning there is no change in slope (no stretching or compression).

Transformation Rule:

The general transformation for an absolute value function is: g(x)=axh+kg(x) = a |x - h| + k Where:

  • hh represents a horizontal shift (to the left if hh is negative),
  • kk represents a vertical shift (down if kk is negative),
  • aa affects the slope (since a=1a = 1, there is no vertical stretch or compression).

Equation:

Here, the graph has shifted horizontally by 2 units to the left, so h=2h = -2, and vertically by 3 units downward, so k=3k = -3. Therefore, the equation is: g(x)=x+23g(x) = |x + 2| - 3

Would you like more details on any step, or have further questions?

Related questions:

  1. What is the effect of changing the slope aa in an absolute value function?
  2. How would the graph change if the transformation had a vertical shift upwards?
  3. Can you identify the domain and range of the transformed function g(x)=x+23g(x) = |x + 2| - 3?
  4. How does reflecting the graph of f(x)=xf(x) = |x| across the x-axis affect the equation?
  5. What are the key differences between horizontal and vertical transformations in graphs?

Tip:

Always start by identifying shifts (horizontal and vertical) when graphing transformations of functions like x|x|.

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Absolute Value Functions
Graph Transformations

Formulas

g(x) = a|x - h| + k

Theorems

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Suitable Grade Level

Grades 9-12