Use the Horizontal Line Test to Determine If the Function $f ( x ) = \sqrt { 81 - x ^ { 2 } }$

question 98

Multiple Choice

Use the horizontal Line Test to determine if the function is one-to-one and so has an inverse function.

$f ( x ) = \sqrt { 81 - x ^ { 2 } }$

• A)f is one-to-one
• B)f is not one-to-one
• C)cannot be determined

Comprehend the concept and importance of validity in employment tests and selections, including content and predictive validity.

Recognize the legal and ethical considerations in employment testing and reference checking.

Identify different types of employment tests and their applications in the selection process.

Acknowledge the effectiveness and limitations of reference checks, including credit checks and written letters of reference.