Math Problem Statement

Below is the graph of y = f(x). Using the red points to draw the graph of y = -\frac{1}{2}f(x).

Solution

The image is a problem about function transformations. The graph of y=f(x)y = f(x) is given, and the task is to draw the graph of y=12f(x)y = -\frac{1}{2}f(x).

To solve this problem, we need to understand how the given transformation affects the original graph:

  1. Reflection across the x-axis: The negative sign in 12f(x)-\frac{1}{2}f(x) indicates a reflection over the x-axis. This means that every point on the graph of f(x)f(x) will be mirrored across the x-axis.
  2. Vertical compression by a factor of 12\frac{1}{2}: The factor 12\frac{1}{2} indicates a vertical compression. This means that the y-coordinates of all points on the reflected graph will be halved.

Steps to Draw the Graph:

  1. Identify the key points on the original graph y=f(x)y = f(x). Let's assume we have points like (x1,y1)(x_1, y_1), (x2,y2)(x_2, y_2), etc.
  2. Apply the reflection across the x-axis: Each point (xi,yi)(x_i, y_i) will become (xi,yi)(x_i, -y_i).
  3. Apply the vertical compression: Multiply the y-coordinates by 12\frac{1}{2}. The reflected points will transform from (xi,yi)(x_i, -y_i) to (xi,12yi)(x_i, -\frac{1}{2}y_i).

Applying the Transformation to Each Point:

  • Take each point from the graph of y=f(x)y = f(x) and apply the transformations described above.
  • Plot these new points on the coordinate plane to draw the graph of y=12f(x)y = -\frac{1}{2}f(x).

Would you like a more detailed explanation or have any questions about this transformation process?

Here are some related questions to explore:

  1. What happens if the transformation was y=12f(x)y = \frac{1}{2}f(x) instead?
  2. How does a horizontal stretch or compression affect the graph?
  3. What is the effect of a translation of the function, such as y=f(x)+cy = f(x) + c?
  4. How would the transformation change if the expression was y=2f(x)y = -2f(x)?
  5. How can we determine the new range of the function after applying transformations?

Tip: Understanding each transformation (reflection, vertical/horizontal stretch, and translation) separately can help in combining them correctly to draw the transformed graph accurately.

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Math Problem Analysis

Mathematical Concepts

Function Transformations
Reflections
Vertical Compression

Formulas

y = -\frac{1}{2}f(x)

Theorems

Reflection across the x-axis
Vertical Stretch/Compression

Suitable Grade Level

Grades 9-11