Review of Functions

Function Vocab

100

True or False-A relation is a set of ordered pairs

What is TRUE?

200

The set of first coordinates of a relation or a function

What is Domain?

300

The set of second coordinates in a relation or a function

What is the range?

400

A relation that assigns exactly one value in the range to each value in the domain?

What is a function?

Evaluating Function Rules

100

Evaluate f(x)=-3x if x=2

What is -6?

200

 What is f(-6) for the function 

f(x) = 6x + 5?

What is -31?

300

Given the function f(x) = 8x + 9. 

Find f( − 7)  

What is -47?

400

Evaluate f(x)=25 + 4x if x=5

What is 45?

Writing Function Rules

100

What is the function rule that represents the sentence. 2.3 more than the quotient of h and 4 is w.

What is 2.3+h/4=w?

200

What is the function rule that represents the sentence. y is 8 less than the product of 5 and x. 

What is y=5x-8?

300

What is the function rule that represents the sentence. z is 6 more than twice y.  

What is z=2y+6?

400

Write the function rule for the situation. The price p of a pizza is $6.75 plus $0.85 for each of the t toppings on the pizza.

What is p=6.75 + 0.85t?

Is it a Function?

100

Is it a function? {(2, 3), (4, 5), ( -2, 6)}

What is YES because x does not repeat?

200

Using the vertical line test does the graph of the points (1,3) and (1,5) represent a function?

What is False, the points fail the vertical line test

300

Is it a function?

What is NO because it does not pass the Vertical Line Test?

400

Is it a function?

What is YES because it passes the Vertical Line Test?