Math Problem Statement

Use the graph of y = f(x) to graph the function y = (1/2)f(-4 - x). For each point for f(x), determine the corresponding point for y = (1/2)f(-4 - x). Points on f(x) are: (-5, -1), (-4, 5), (0, 0), (1, -2), (2, 2).

Solution

We need to find the corresponding points for the transformation y=12f(4x)y = \frac{1}{2} f(-4 - x) based on the given points from the graph of y=f(x)y = f(x).

Step-by-Step Transformation:

  1. Horizontal reflection and shift: The term 4x-4 - x suggests a reflection across the y-axis and a horizontal shift by 4 units to the left.
  2. Vertical scaling: The 12\frac{1}{2} outside the function scales the output (y-values) by a factor of 0.5.

Let’s apply this transformation to each point:

  1. For (5,1)(-5, -1):

    • New x=4(5)=1x' = -4 - (-5) = 1
    • New y=12(1)=0.5y' = \frac{1}{2}(-1) = -0.5
    • Transformed point: (1,0.5)(1, -0.5)
  2. For (4,5)(-4, 5):

    • New x=4(4)=0x' = -4 - (-4) = 0
    • New y=12(5)=2.5y' = \frac{1}{2}(5) = 2.5
    • Transformed point: (0,2.5)(0, 2.5)
  3. For (0,0)(0, 0):

    • New x=4(0)=4x' = -4 - (0) = -4
    • New y=12(0)=0y' = \frac{1}{2}(0) = 0
    • Transformed point: (4,0)(-4, 0)
  4. For (1,2)(1, -2):

    • New x=4(1)=5x' = -4 - (1) = -5
    • New y=12(2)=1y' = \frac{1}{2}(-2) = -1
    • Transformed point: (5,1)(-5, -1)
  5. For (2,2)(2, 2):

    • New x=4(2)=6x' = -4 - (2) = -6
    • New y=12(2)=1y' = \frac{1}{2}(2) = 1
    • Transformed point: (6,1)(-6, 1)

Completed Table:

Point on f(x)f(x)Point on 12f(4x)\frac{1}{2}f(-4 - x)
(-5, -1)(1, -0.5)
(-4, 5)(0, 2.5)
(0, 0)(-4, 0)
(1, -2)(-5, -1)
(2, 2)(-6, 1)

Would you like more details or have any questions on how the transformation works?

Here are five follow-up questions that expand on this concept:

  1. What is the effect of a horizontal translation on the graph of a function?
  2. How does vertical scaling impact the graph of a function?
  3. What happens when a function is reflected across the y-axis?
  4. Can you explain the difference between f(x+4)f(x + 4) and f(x4)f(x - 4) in terms of horizontal shift?
  5. How would you graph f(x)f(-x) compared to f(x)f(x)?

Tip: Always apply transformations in the correct order: first handle the horizontal changes (inside the function), then vertical changes (outside the function).

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Function transformations
Horizontal reflection
Vertical scaling
Graph shifts

Formulas

y = (1/2)f(-4 - x)

Theorems

Horizontal reflection
Vertical scaling by 1/2

Suitable Grade Level

Grades 9-12