Evaluating Functions and Their Types

The video tutorial covers three types of functions: absolute value, rational, and radical functions. It explains the characteristics of each function type and provides examples of how to evaluate them by substituting specific values. The tutorial demonstrates the evaluation process for each function type, including calculating the square root for radical functions, using absolute values, and simplifying fractions for rational functions.

What are the three types of functions discussed in the video?

• Polynomial, Logarithmic, Trigonometric

• Linear, Quadratic, Exponential

• Cubic, Quartic, Quintic

• Absolute Value, Rational, Radical

What is a radical sign used for?

• To represent a root, such as a square root

• To denote division

• To show addition

• To indicate multiplication

What happens if you put a 3 before the radical sign?

• It becomes a cube root

• It becomes a fourth root

• It becomes a fifth root

• It becomes a square root

What is the absolute value of a negative number?

• The positive version of that number

• Double the negative number

• Zero

• The same negative number

What is another term for a fraction?

• Percentage

• Ratio

• Decimal

• Integer

How do you evaluate a function?

• By multiplying all the terms

• By adding all the coefficients

• By dividing the highest term by the lowest

• By substituting a specific value for the variable

What is the result of evaluating f(4) for the radical function?

• Square root of 20

• Square root of 16

• Square root of 14

• Square root of 18

What is the first step in evaluating the absolute value function with a given number?

• Add the number to the constant

• Multiply the number by the coefficient

• Divide the number by the coefficient

• Subtract the number from the constant

What is the final result of evaluating the absolute value function with -2/3?

• Zero

• Positive 23

• Negative 15

• Negative 23

What is the first step in evaluating the rational function with a given number?

• Subtract the number from the denominator

• Add the number to the numerator

• Multiply the number by the denominator

• Substitute the number into both the numerator and denominator