A relation is defined by the equation $ y = \frac{1}{x^2 - 4} $. Which of the following statements correctly describes the domain of this relation?
Question 2
Consider the graph of a horizontal line. Does this graph represent a function, and why?
Question 3
Which of the following scenarios represents a relation that is a function?
Question 4
Given the function $ f(x) = \sqrt{x - 9} $, what is the domain of this function?
Question 5
A relation is defined by the set of ordered pairs $ \{(x, y) \mid y^2 = x, x \ge 0 \} $. Which of the following statements about this relation is true?
