Math Problem Statement

The graph of is horizontally stretched by a factor of 2, reflected in the x-axis, and shifted 3 units down. Find the equation that results from the transformation, and graph it

Solution

To find the equation resulting from the given transformations, we need to apply the transformations step-by-step to a generic function f(x)f(x). Let's assume we start with a basic function y=f(x)y = f(x).

Step-by-Step Transformation

  1. Horizontal Stretch by a Factor of 2: A horizontal stretch by a factor of 2 changes the function from f(x)f(x) to f(x2)f\left(\frac{x}{2}\right).

  2. Reflection in the x-axis: Reflecting a function in the x-axis changes it to f(x)-f(x). So, our function now becomes: f(x2)-f\left(\frac{x}{2}\right)

  3. Shift 3 Units Down: To shift the function 3 units down, subtract 3 from the function. The final transformed function becomes: y=f(x2)3y = -f\left(\frac{x}{2}\right) - 3

Example Transformation

If we start with a common function, like f(x)=x2f(x) = x^2:

  1. Apply the horizontal stretch: f(x2)=(x2)2=x24f\left(\frac{x}{2}\right) = \left(\frac{x}{2}\right)^2 = \frac{x^2}{4}

  2. Apply the reflection in the x-axis: f(x2)=x24-f\left(\frac{x}{2}\right) = -\frac{x^2}{4}

  3. Shift 3 units down: y=x243y = -\frac{x^2}{4} - 3

Resulting Equation

The equation after applying all the transformations is: y=x243y = -\frac{x^2}{4} - 3

Graphing the Transformed Function

To graph this function:

  1. Start with the basic graph of y=x2y = x^2.
  2. Stretch it horizontally by a factor of 2 to get y=x24y = \frac{x^2}{4}.
  3. Reflect it over the x-axis to get y=x24y = -\frac{x^2}{4}.
  4. Shift the graph 3 units down to get y=x243y = -\frac{x^2}{4} - 3.

Let's visualize this by plotting the graph.

I'll create a graph for the original function y=x2y = x^2 and its transformation y=x243y = -\frac{x^2}{4} - 3.It seems like I can’t do more advanced data analysis right now. Please try again later.

However, you can still graph the function manually using graphing software or a calculator. The key points to consider are:

  1. The original function is y=x2y = x^2.
  2. After applying the transformations, the function becomes y=x243y = -\frac{x^2}{4} - 3.
  3. Start with the graph of y=x2y = x^2, stretch it horizontally, reflect it across the x-axis, and then shift it down by 3 units.

If you have any questions or want more details, feel free to ask!

Related Questions

  1. How do horizontal stretches and compressions affect the shape of a graph?
  2. What are the effects of reflecting a function across different axes?
  3. How do vertical and horizontal shifts impact the graph of a function?
  4. What are some common transformations of quadratic functions?
  5. How would the transformations differ if the function was y=sin(x)y = \sin(x) instead?

Tip: Always apply transformations in the order they are given to avoid confusion and mistakes.

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Math Problem Analysis

Mathematical Concepts

Function Transformations
Quadratic Functions

Formulas

y = f(x)
y = f(x/a)
y = -f(x)
y = f(x) - k

Theorems

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Suitable Grade Level

Grades 9-11