Math Problem Statement

The function f(x) = -√(x + 3) - 4 is graphed below. Find the endpoint, domain, and range of the function.

Solution

Let's break down the mathematical information from the image you uploaded.

The function shown is f(x)=x+34f(x) = -\sqrt{x + 3} - 4.

1. The endpoint of the graph:

This function involves a square root, which means the graph has a starting point, as the square root function is only defined for non-negative values of the argument inside the square root.

To find the endpoint:

  • The expression inside the square root must be greater than or equal to zero: x+30    x3x + 3 \geq 0 \implies x \geq -3
  • So, the function is defined starting from x=3x = -3.
  • Substituting x=3x = -3 into the function: f(3)=3+34=04=4f(-3) = -\sqrt{-3 + 3} - 4 = -\sqrt{0} - 4 = -4 Therefore, the endpoint of the graph is at (3,4)(-3, -4).

2. The domain of the function:

The domain is all xx-values for which the function is defined, based on the condition x+30x + 3 \geq 0, or x3x \geq -3.

Thus, the domain is: [3,)[-3, \infty)

3. The range of the function:

The range is all possible yy-values that the function can take. Since the square root function x\sqrt{x} is always non-negative, and it is multiplied by 1-1 in this function, the maximum value occurs at the endpoint and is 4-4.

As xx increases, x+3\sqrt{x + 3} increases, but because of the negative sign in front of the square root, the values decrease further below 4-4.

Thus, the range is: (,4](-\infty, -4]


Summary:

  1. The endpoint of the graph is at (3,4)(-3, -4).
  2. The domain of the function is [3,)[-3, \infty).
  3. The range of the function is (,4](-\infty, -4].

Would you like more details or have any questions? Here are five related questions to explore:

  1. How would the graph change if the function were f(x)=x+34f(x) = \sqrt{x + 3} - 4?
  2. What would the range be if the constant "-4" were changed to "+4"?
  3. Can you determine the horizontal shift of the graph based on x+3x + 3?
  4. How would you describe the overall shape of square root functions in general?
  5. What are the transformations applied to the parent function x\sqrt{x} in this case?

Tip: Always consider the transformations of basic functions (like square roots) when analyzing graphs to make sense of their shifts, stretches, and reflections.

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Math Problem Analysis

Mathematical Concepts

Square Root Functions
Domain and Range
Graphing Transformations

Formulas

f(x) = -√(x + 3) - 4
Domain: x + 3 ≥ 0
Range: y ≤ -4

Theorems

Square Root Function Definition

Suitable Grade Level

Grades 9-11