Learn how to determine the domain of a radical function

The video tutorial explains how to visually determine if a graph represents a function using the vertical line test. It discusses the concept of domain and range, particularly focusing on functions involving square roots. The tutorial provides a step-by-step method to determine the domain of a function with a radical expression, emphasizing that the expression inside the square root must be non-negative.

What test can you use to visually determine if a graph represents a function?

• Horizontal line test

• Vertical line test

• Diagonal line test

• Parallel line test

What is the function F(x) = sqrt(x - 1) used to illustrate in the video?

• Understanding the domain and range of functions

• The properties of linear functions

• The importance of graphing functions

• The concept of imaginary numbers

Which type of number cannot be used as an input for the square root function F(x) = sqrt(x - 1)?

• Zero

• Positive numbers

• Negative numbers

• Even numbers

What must be true about the expression inside a square root to determine the domain of a function?

• It must be less than zero

• It must be greater than zero

• It must be greater than or equal to zero

• It must be equal to zero

How is the domain of the function F(x) = sqrt(x - 1) expressed?

• From zero to positive infinity

• From 1 to positive infinity

• From negative infinity to zero

• From negative infinity to 1