Math Problem Statement

If (0,8) is a point on the graph of y = f(x), which of the following must be on the graph of y = f(-x)?

Solution

The question you uploaded asks:

"If (0, 8) is a point on the graph of y=f(x)y = f(x), which of the following must be on the graph of y=f(x)y = f(-x)?"

Solution:

  1. Understanding the relationship between f(x)f(x) and f(x)f(-x):

    • The transformation y=f(x)y = f(-x) is a horizontal reflection of the graph of y=f(x)y = f(x) across the y-axis.
  2. Given point:

    • (0,8)(0, 8) is on the graph of y=f(x)y = f(x), meaning f(0)=8f(0) = 8.
  3. Reflecting over the y-axis:

    • When we reflect a point (a,b)(a, b) across the y-axis, the x-coordinate changes sign while the y-coordinate remains the same.
    • In this case, the point (0,8)(0, 8) is on f(x)f(x), and reflecting this point across the y-axis results in no change because the x-coordinate is 0. So, the point remains (0,8)(0, 8).

Therefore, (0, 8) must also be on the graph of y=f(x)y = f(-x).

The correct answer is:

  • (0, 8).

Would you like more details or have any questions?

5 related questions:

  1. What kind of transformation is f(x)f(-x) compared to f(x)f(x)?
  2. How do vertical and horizontal transformations affect graphs of functions?
  3. Can we apply this reflection concept to non-symmetric functions?
  4. What happens to the graph of f(x)f(x) if the transformation is y=f(x)y = -f(x)?
  5. How does the graph of y=f(x+2)y = f(x + 2) differ from y=f(x)y = f(x)?

Tip:

When reflecting a graph horizontally (via f(x)f(-x)), only the x-coordinates change, while the y-coordinates stay the same.

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Math Problem Analysis

Mathematical Concepts

Function Transformations
Graph Reflections

Formulas

y = f(-x) (Horizontal reflection of a function)

Theorems

Reflection theorem across the y-axis for functions

Suitable Grade Level

Grades 9-12