Math Problem Statement

The tables above give values of f and g at selected values of x. The graph of y = g(x) is the result of transforming the graph of f. Which of the following could be the transformation from f to g?

Solution

Let's analyze the problem and the data in the image step by step.

Given Data:

We have two tables:

  1. Table for f(x)f(x):
xx-4025
f(x)f(x)1234
  1. Table for g(x)g(x):
xx0469
g(x)g(x)0123

We are asked to find which transformation of f(x)f(x) results in g(x)g(x). The possible transformations are:

  • (A) g(x)=f(x4)1g(x) = f(x - 4) - 1
  • (B) g(x)=f(x3)+1g(x) = f(x - 3) + 1
  • (C) g(x)=f(x+2)5g(x) = f(x + 2) - 5
  • (D) g(x)=f(x+1)+7g(x) = f(x + 1) + 7

Step-by-Step Analysis:

The goal is to determine how g(x)g(x) is related to f(x)f(x) by comparing the two tables.

Check for Horizontal Shifts:

We observe the corresponding values of f(x)f(x) and g(x)g(x). For example:

  • When x=0x = 0, f(0)=2f(0) = 2, but g(0)=0g(0) = 0.
  • When x=4x = 4, f(4)f(4) is not directly given, but we can see that at x=2x = 2, f(2)=3f(2) = 3 and g(4)=1g(4) = 1.

This suggests a shift in xx.

Check Transformation (A):

For g(x)=f(x4)1g(x) = f(x - 4) - 1, we shift the input of f(x)f(x) to the right by 4 and then subtract 1 from the output.

Let’s test this:

  • For x=0x = 0, f(04)=f(4)=1f(0 - 4) = f(-4) = 1, and 11=01 - 1 = 0, which matches g(0)g(0).
  • For x=4x = 4, f(44)=f(0)=2f(4 - 4) = f(0) = 2, and 21=12 - 1 = 1, which matches g(4)g(4).
  • For x=6x = 6, f(64)=f(2)=3f(6 - 4) = f(2) = 3, and 31=23 - 1 = 2, which matches g(6)g(6).
  • For x=9x = 9, f(94)=f(5)=4f(9 - 4) = f(5) = 4, and 41=34 - 1 = 3, which matches g(9)g(9).

Thus, transformation (A) works.

Conclusion:

The correct transformation is (A) g(x)=f(x4)1g(x) = f(x - 4) - 1.


Do you need further clarification or details on any part of this problem? Here are some related questions for practice:

  1. How would the transformation change if we added a vertical shift instead of a horizontal one?
  2. What is the effect of applying g(x)=f(x+3)g(x) = f(x + 3) to f(x)f(x)?
  3. Can you identify how a reflection over the x-axis would change f(x)f(x)?
  4. How do horizontal shifts affect the graph of a function?
  5. How would g(x)=f(x)+cg(x) = f(-x) + c transform f(x)f(x)?

Tip: Always try applying transformations to a few points to check if they match the given function!

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Math Problem Analysis

Mathematical Concepts

Function Transformation
Horizontal and Vertical Shifts

Formulas

g(x) = f(x - h) + k
Horizontal shift: f(x - h)
Vertical shift: f(x) + k

Theorems

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Suitable Grade Level

Grades 9-12