Activity 3.3 Function Notation

Determine if the vocabulary word relates to the x or the y.

What is the value of f(2) for the function f(x) = -7x + 4?

Example 1: Evaluate the function f(x) = 5x - 8 for f(10).

Julia babysits for 4 hours making $10 per hour.

Example 3: Randy paid $40 up front to join the gym and then also pays a $15 per month fee. How much has he paid after 9 months?

Example 4: Linda started with a jar that contained 240 jelly beans. She figured she was eating 12 jelly beans per day. How many jelly beans were left in the jar after 15 days?

Emma paid $8 to get into Bull Winkles and once inside, she paid $3 per ride. She went on 7 rides. How much money did she spend at Bull Winkles?

Joel started with $150 in his savings account and plans to add $65 every month. How much money will be in his account at the end of 12 months?

Anne buys used cars at auction for $2000 per car. There is a $150 one-time fee to take part in the auction. If Anne buys 13 used cars, how much does she pay in total? In the show your work section, write the function, identify the dependent and independent variable, as well as the cost for 13 cars.

What is the domain of mapping diagram below?

What is the range of mapping diagram below?

Is this mapping diagram a function?

Is this mapping diagram a function

Is this mapping diagram a function?

State the domain and range of the relation. { (-3,2), (4,1), (0,3), (5,-2), (2,7)}

Review Lesson 2-1: Match each relation with its domain.

(one domain will not be used)

Review Lesson 2-1: Match each relation with its range.

(one range will not be used)

Review Lesson 2-1: Categorize each relation as a function or NOT a function.

Vocabulary Review: Classify each relation based on whether or not it is a function.