Math Problem Statement

The graph of y = f(x) is shown. Draw the graph of y = -1/2 * f(x).

Solution

The problem asks to draw the graph of y=12f(x)y = -\frac{1}{2} f(x), given the graph of y=f(x)y = f(x).

Here’s how the transformation works:

  1. Vertical Scaling (by 12\frac{1}{2}): The factor 12\frac{1}{2} will compress the graph vertically. This means that every point on the graph of f(x)f(x) will be halved in the vertical direction. For example, if a point on the original graph is (x,y)(x, y), the corresponding point on the transformed graph will be (x,y2)(x, \frac{y}{2}).

  2. Reflection (due to the negative sign): The negative sign will reflect the graph across the x-axis. So after compressing the graph, all positive values of yy will become negative, and negative values will become positive. If a point on the compressed graph is (x,y2)(x, \frac{y}{2}), the reflected point will be (x,y2)(x, -\frac{y}{2}).

Step-by-Step Instructions for Plotting:

  • Take the original graph of f(x)f(x) and identify key points.
  • Halve the yy-coordinates (vertical compression).
  • Reflect these new points across the x-axis.

Would you like more details, or help drawing the graph itself?

Here are 5 related questions:

  1. What does a horizontal stretch or compression do to a graph?
  2. How would you graph y=f(x+2)y = f(x + 2) compared to y=f(x)y = f(x)?
  3. What is the effect of multiplying f(x)f(x) by 33 instead of 12\frac{1}{2}?
  4. How do vertical shifts affect the graph of a function?
  5. How does combining transformations (e.g., scaling and translating) work?

Tip: Always perform vertical transformations (scaling and reflecting) before horizontal ones, unless otherwise specified.

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Math Problem Analysis

Mathematical Concepts

Graph Transformations
Scaling and Reflection
Functions

Formulas

y = -1/2 * f(x)

Theorems

Reflection and Scaling Theorem

Suitable Grade Level

Grades 9-12