Math Problem Statement

The graph shows g(x), which is a translation of f(x) = |x|. Write the function rule for g(x).

Solution

The graph provided shows a V-shaped function, which is a translation of the parent function f(x)=xf(x) = |x|. To find the equation of the translated function g(x)g(x), we must analyze its shift and form.

Step-by-step approach:

  1. Determine the vertex (h, k):
    The vertex of the parent function f(x)=xf(x) = |x| is located at (0, 0). In this case, the vertex of the function g(x)g(x) has shifted. From the graph, the vertex is at (2,6)(-2, 6). Therefore, h=2h = -2 and k=6k = 6.

  2. Determine the vertical stretch/compression (a):
    The slope of the arms of the V in the parent function f(x)=xf(x) = |x| is 1. In this graph, the slope is still 1, meaning there is no vertical stretch or compression. Thus, a=1a = 1.

  3. Form the equation:
    The general form for a translated absolute value function is: g(x)=axh+kg(x) = a|x - h| + k Substituting the values a=1a = 1, h=2h = -2, and k=6k = 6, we get: g(x)=x+2+6g(x) = |x + 2| + 6

Final Answer:

g(x)=x+2+6g(x) = |x + 2| + 6

Let me know if you'd like further clarification or details!


Here are 5 related questions to expand on this:

  1. How would the graph change if a=1a = -1?
  2. What is the effect of changing the value of hh in the equation g(x)=axh+kg(x) = a|x - h| + k?
  3. How would the equation change if the graph were translated 3 units down instead of up?
  4. How does the slope of the lines relate to the value of aa?
  5. What would happen to the graph if kk was negative?

Tip: Always check both the vertex and the slopes when writing the equation of an absolute value function!

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Functions
Translations of Functions

Formulas

f(x) = a|x - h| + k

Theorems

Absolute Value Function Transformation

Suitable Grade Level

Grades 8-10