Math Problem Statement

For the equation f(x) = √(x - 3), complete the table of values for f(x) and graph the equation.

Solution

Let's solve this step by step.

Step 1: Complete the Table for f(x)=x3f(x) = \sqrt{x - 3}

The function f(x)=x3f(x) = \sqrt{x - 3} means that we need to find values of f(x)f(x) for various xx values by substituting them into the equation. We can only choose values of x3x \geq 3 because the square root requires non-negative values inside.

Let's complete the table for some specific values of xx:

  1. x=3x = 3:
    f(3)=33=0=0f(3) = \sqrt{3 - 3} = \sqrt{0} = 0
  2. x=4x = 4:
    f(4)=43=1=1f(4) = \sqrt{4 - 3} = \sqrt{1} = 1
  3. x=5x = 5:
    f(5)=53=21.41f(5) = \sqrt{5 - 3} = \sqrt{2} \approx 1.41
  4. x=6x = 6:
    f(6)=63=31.73f(6) = \sqrt{6 - 3} = \sqrt{3} \approx 1.73
  5. x=7x = 7:
    f(7)=73=4=2f(7) = \sqrt{7 - 3} = \sqrt{4} = 2

So, the table should look like this:

xxf(x)f(x)
30
41
51.41
61.73
72

Step 2: Plot the Points on the Graph

Now, let's plot these points on the graph:

  • (3, 0)
  • (4, 1)
  • (5, 1.41)
  • (6, 1.73)
  • (7, 2)

After plotting, draw a smooth curve that starts from x=3x = 3 and follows the square root shape, gradually increasing but at a slower rate as xx increases.

Would you like me to assist further with a specific part of this solution?


Follow-up Questions:

  1. What are the properties of the function f(x)=x3f(x) = \sqrt{x - 3} in terms of domain and range?
  2. How does changing the expression inside the square root affect the graph?
  3. What would happen to the graph if the function were f(x)=x3f(x) = -\sqrt{x - 3}?
  4. Can you predict the behavior of f(x)=xaf(x) = \sqrt{x - a} for any constant aa?
  5. How would we handle graphing if we changed this function to f(x)=x3+2f(x) = \sqrt{x - 3} + 2?

Tip:

For square root functions like f(x)=xaf(x) = \sqrt{x - a}, the domain begins at x=ax = a, and the range starts from zero and increases with xx.

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Math Problem Analysis

Mathematical Concepts

Functions
Square Root Functions
Graphing

Formulas

f(x) = √(x - 3)

Theorems

Domain and Range of Square Root Functions

Suitable Grade Level

Grades 9-10