Math Problem Statement

The graph represents a transformation of the parent function y = |x|. Which series of transformations accurately describe the graph shown?

Solution

The graph provided depicts a piecewise linear function where the postman walks a fixed distance from the post office, and the transformation is based on the absolute value function y=xy = |x|.

Step-by-step analysis:

  1. Parent function: The parent function y=xy = |x| is V-shaped and symmetrical about the y-axis.
  2. Transformations:
    • The graph has been reflected about the x-axis because the graph starts decreasing after x=0x = 0.
    • There seems to be a vertical stretch by a factor of 2, as the slope is steeper than the standard y=xy = |x| graph.
    • The vertex of the graph has shifted to the right (indicating a horizontal shift of 4 units to the right) and upwards (vertical shift of 8 units up).

Thus, the correct series of transformations would include a reflection about the x-axis, vertical stretch by a factor of 2, horizontal shift 4 units to the right, and vertical shift 8 units up.

Answer:

The correct option is A.


Would you like further details or have any questions?

Here are 5 related questions to expand your understanding:

  1. How do you determine the vertical stretch or compression of a graph?
  2. What impact does reflecting a graph across the x-axis have on the function?
  3. How does a horizontal shift affect the equation of a function?
  4. How can you differentiate between a horizontal and vertical shift in a graph?
  5. What is the effect of a vertical shift on the vertex of an absolute value function?

Tip: When analyzing transformations, always consider the vertex's position, the slope, and the direction in which the graph opens.

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Math Problem Analysis

Mathematical Concepts

Algebra
Transformations of Functions
Absolute Value Function

Formulas

y = |x|
Transformations: y = a|x-h| + k

Theorems

Reflection across axes
Horizontal and Vertical Shifts
Vertical Stretch/Compression

Suitable Grade Level

Grades 9-12