Math Problem Statement

Identify the graph of g(x) = |x| + 6 and choose the correct description of the transformation from the graph of f(x) = |x| to the graph of g. Choose the description of the domain and range.

Solution

Let's analyze the problem step by step.

1. Identifying the graph of g(x)=x+6g(x) = |x| + 6:

  • The function g(x)=x+6g(x) = |x| + 6 is a transformation of the basic absolute value function f(x)=xf(x) = |x|. The transformation involves a vertical shift of 6 units upwards, as the "+6" translates the graph upwards by 6 units.

  • Looking at the graphs, the correct graph must have a "V" shape (since it is an absolute value function), and its vertex must be at (0,6)(0, 6).

By this reasoning, the third graph (bottom-left) is the correct one because the vertex is at (0,6)(0, 6).

2. Description of the transformation:

  • The transformation from f(x)=xf(x) = |x| to g(x)=x+6g(x) = |x| + 6 is a vertical translation 6 units up, as the "+6" shifts the graph upward.

Therefore, the correct choice is: "The graph of gg is a vertical translation 6 units up of the graph of ff."

3. Domain and range:

  • The domain of g(x)=x+6g(x) = |x| + 6 is the same as the domain of the absolute value function, which is all real numbers because the absolute value function is defined for every real number xx.

  • The range of g(x)=x+6g(x) = |x| + 6 is y6y \geq 6 because the lowest value of x|x| is 0, and adding 6 shifts the minimum value of the function to 6.

Thus, the correct choice is: "The domain is all real numbers. The range is y6y \geq 6."


Would you like further clarification or more details? Here are some additional questions you might find useful:

  1. What are the properties of the absolute value function x|x|?
  2. How do vertical and horizontal translations affect the graph of a function?
  3. Can you explain how the domain and range of absolute value functions are determined?
  4. What are other transformations (besides vertical shifts) that could be applied to x|x|?
  5. How can you graph g(x)=x+kg(x) = |x| + k for different values of kk?

Tip:

Always pay attention to whether transformations involve vertical or horizontal shifts. Vertical shifts are controlled by adding/subtracting outside the function, while horizontal shifts are inside.

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Functions
Graph Transformations

Formulas

g(x) = |x| + k for vertical shifts

Theorems

Properties of Absolute Value Functions

Suitable Grade Level

Grades 9-10