Math Problem Statement

A function f(x) = √x is transformed into the function g(x) = 2√(x + 4) - 7. Choose the 3 transformations that occurred.

Solution

Let's analyze the transformations from the given functions:

  1. The original function is f(x)=xf(x) = \sqrt{x}.
  2. The transformed function is g(x)=2x+47g(x) = 2\sqrt{x+4} - 7.

Now, let's break down the transformations:

  • Vertical Stretch: The coefficient 2 in front of x+4\sqrt{x+4} stretches the graph vertically. This is a vertical stretch.
  • Horizontal Shift: The expression x+4\sqrt{x+4} indicates a horizontal shift. Since it is x+4x+4, the graph is shifted 4 units to the left.
  • Vertical Shift: The constant 7-7 at the end subtracts 7 from the entire function, which shifts the graph 7 units down.

Conclusion:

The three transformations are:

  1. Vertical Stretch
  2. Horizontal Shift Left 4 units
  3. Vertical Shift Down 7

Would you like a detailed explanation of any part of this transformation?


Here are 5 questions to deepen your understanding:

  1. How does changing the coefficient of the square root affect the graph of the function?
  2. What would happen if the transformation was x4\sqrt{x-4} instead of x+4\sqrt{x+4}?
  3. How would the graph be different if the vertical shift was positive instead of negative?
  4. What is the difference between a vertical stretch and a vertical compression?
  5. How do you identify horizontal transformations based on the expression inside the square root?

Tip: Always remember that transformations inside the square root affect the graph horizontally, while transformations outside affect it vertically.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Function transformations
Algebra

Formulas

g(x) = a√(x - h) + k

Theorems

Function transformation rules

Suitable Grade Level

Grades 9-11