Math Problem Statement

Graph the following function by moving the green and blue dots (if necessary). y, equals, cube root of, x, minus, 5, end cube root, minus, 5 y= 3

x−5 ​ −5

Solution

It seems you're dealing with a graphing problem involving the function:

y=x535y = \sqrt[3]{x - 5} - 5

Let’s break down how to graph this function by transforming it step-by-step:

Step 1: Understand the Base Function

The base function is the cube root function, y=x3y = \sqrt[3]{x}. This function has a characteristic shape:

  • The graph of y=x3y = \sqrt[3]{x} passes through the origin (0,0).
  • It increases from left to right, and is symmetric about the origin.

Step 2: Transformations

Now, let’s apply the transformations to the base function.

  1. Horizontal Shift:

    • The expression inside the cube root is x5x - 5.
    • This results in a horizontal shift to the right by 5 units.
    • So, the graph now starts from the point (5,0)(5, 0).
  2. Vertical Shift:

    • There is also a -5 outside the cube root, meaning the entire graph shifts down by 5 units.
    • The starting point now moves from (5,0)(5, 0) to (5,5)(5, -5).

Step 3: Plotting Key Points

To plot the graph, consider these points:

  • Starting Point: The shifted version starts at (5,5)(5, -5).
  • Additional Points: Calculate a few values to understand the behavior:
    • When x=6x = 6, y=6535=135=4y = \sqrt[3]{6 - 5} - 5 = \sqrt[3]{1} - 5 = -4.
    • When x=13x = 13, y=13535=835=3y = \sqrt[3]{13 - 5} - 5 = \sqrt[3]{8} - 5 = -3.

Graph Description

  • The graph will have an inflection point at (5,5)(5, -5).
  • To the right of x=5x = 5, the graph gradually increases.
  • To the left, the values of yy continue to decrease, but at a decreasing rate.

Moving the Dots (Green and Blue)

  • Green Dot: Move it to the point (5,5)(5, -5) to mark the new "origin" after the transformation.
  • Blue Dot: Use it to mark any other point that helps illustrate the increasing nature, for example, (6,4)(6, -4).

Would you like more detailed instructions on how to perform these transformations or see a graph of this function?


Questions for Further Exploration:

  1. What are the differences between the graphs of cube root functions and square root functions?
  2. How does a horizontal shift affect the domain of a function?
  3. What happens if we have a negative coefficient in front of the cube root?
  4. Can you determine the range of this transformed function?
  5. How would the graph change if the transformation was y=x+535y = \sqrt[3]{x + 5} - 5?

Tip: When graphing transformed functions, it’s helpful to first sketch the base function and then apply each transformation one by one.

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Transformations of Functions
Cube Root Functions

Formulas

y = √[3]{x - 5} - 5

Theorems

Function Transformations
Horizontal and Vertical Shifts

Suitable Grade Level

Grades 9-12