Math Problem Statement

Transforming the graph of a function by reflecting over an axis. Draw the graph of y = -f(x) based on the given graph of y = f(x).

Solution

To draw the graph of y=f(x)y = -f(x), you need to reflect the original graph y=f(x)y = f(x) over the x-axis. This means you take each point on the graph of y=f(x)y = f(x) and change its yy-coordinate to its negative while keeping the xx-coordinate unchanged. Here's how you can do it:

  1. Locate key points on the original graph (e.g., intersections with axes, turning points, and endpoints).
  2. Reflect these points over the x-axis by changing their yy-coordinate's sign.
  3. Draw the reflected points on the same grid.
  4. Connect the reflected points smoothly to form the new graph of y=f(x)y = -f(x).

Would you like me to guide you further step-by-step with this reflection? Here are five related questions to expand your understanding:

  1. What happens to the graph if we reflect it over the y-axis instead?
  2. How does the transformation y=f(x)y = -f(-x) differ from y=f(x)y = -f(x)?
  3. How do reflections affect the symmetry of a function's graph?
  4. Can you identify whether the original function y=f(x)y = f(x) is odd, even, or neither based on the given graph?
  5. How would the graph change if you applied a vertical stretch or compression alongside the reflection?

Tip: Always verify the reflected points by comparing their coordinates to ensure the reflection is accurate!

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Math Problem Analysis

Mathematical Concepts

Function Transformation
Reflection over an axis

Formulas

y = -f(x)

Theorems

Reflection of a function about the x-axis

Suitable Grade Level

Grades 9-12