Math Problem Statement

Kiara performs a vertical stretch of the square root parent function. Which graph depicts this transformation?

Solution

A vertical stretch of a function occurs when the output values (y-values) are multiplied by a factor greater than 1. The square root parent function is given by:

f(x)=xf(x) = \sqrt{x}

When Kiara performs a vertical stretch, the function becomes:

g(x)=axg(x) = a \sqrt{x}

where a>1a > 1 is the vertical stretch factor.

Effects of the Transformation:

  • The graph of g(x)=axg(x) = a\sqrt{x} will stretch vertically, meaning it will appear taller or "stretched" compared to the parent function f(x)=xf(x) = \sqrt{x}.
  • The graph will still pass through the origin (0, 0) because 0=0\sqrt{0} = 0, and the shape of the curve will remain the same but with larger values for yy.

In summary, the graph depicting this transformation will look similar to the square root parent function, but the curve will rise more steeply.

Do you have a specific graph to compare? Or do you want more details on graph transformations?


Here are five related questions for further exploration:

  1. How would the graph look if Kiara applied a vertical compression instead of a stretch?
  2. What happens to the domain and range after the vertical stretch?
  3. Can a vertical stretch affect the x-intercepts of a function?
  4. How would horizontal transformations affect the square root function?
  5. What is the effect of a negative vertical stretch on the graph?

Tip: Vertical stretches and compressions only affect the y-values; they do not change the x-values of the function.

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Math Problem Analysis

Mathematical Concepts

Functions
Transformations
Square Root Function

Formulas

f(x) = √x
g(x) = a√x, where a > 1

Theorems

Transformation Theorem

Suitable Grade Level

Grades 9-11