Math Problem Statement

If the absolute value child function g(x) has a y -intercept at (0, 5) , where is the y -intercept of g(12x) ?

Solution

The function g(x)g(x) has a y-intercept at (0,5)(0, 5), which means g(0)=5g(0) = 5. Now, you're asked to find the y-intercept of the transformed function g(12x)g(12x).

Step-by-step solution:

  1. Understanding the y-intercept:

    • The y-intercept of a function occurs where x=0x = 0. So, to find the y-intercept of g(12x)g(12x), we substitute x=0x = 0 into the transformed function.
  2. Substitute into the transformed function:

    • g(12x)g(12x) becomes g(12×0)=g(0)g(12 \times 0) = g(0).
  3. Use the given information:

    • We already know that g(0)=5g(0) = 5. So, the y-intercept of g(12x)g(12x) is also (0,5)(0, 5).

Conclusion:

The y-intercept of g(12x)g(12x) is (0,5)(0, 5), the same as the y-intercept of the original function.

Would you like further details or any clarifications?

Here are 5 related questions to explore:

  1. How does horizontal scaling affect the x-intercept of a function?
  2. What is the effect of vertical scaling on the y-intercept?
  3. How do transformations like g(12x)g(12x) affect the slope of linear parts in a piecewise function?
  4. How would a translation of the function g(x)g(x) affect the y-intercept?
  5. How do transformations affect the symmetry of an absolute value function?

Tip: Horizontal transformations involve changes to the input (x), while vertical transformations involve changes to the output (y).

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Math Problem Analysis

Mathematical Concepts

Functions
Transformations
Absolute Value Function
Horizontal Scaling

Formulas

g(12x) where g(x) has a y-intercept at (0, 5)

Theorems

Horizontal scaling theorem for functions

Suitable Grade Level

Grades 9-10