Functions Review Quiz

Select all the tables with data that represent a function.

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• (1,3)

• (4,4)

• (6,0)

• (7,2)

• (9,7)

Charlie & Susan are planning a party for 10 people.

*Charlie's location charges an initial fee of $20

plus $25 per person.

*Susan's location whose cost is represented by the equation y=15x+100, where x is the # of people and y is the total cost.

Select all the statements that are true.

• Charlie's location is a cheaper than Susan's location.

• Susan's location is cheaper if you only have 10 people.

• The charge for each additional person is greater for Susan's location

• The charge for each additional person is greater for Charlie's location.

• If the number of people at the party changes to 12, the total cost at each location is the same.

Which graph represents a linear function?

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Diedra has a new coin bank. For the first five days, she deposits the same amount of money into the coin bank. After that, she does not deposit any more money into the bank.

Which graph could represent the amount of money in Diedra's bank?

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How much does Natalie pay her parents each week?

In slope intercept form (y= mx+b) which variable (letter) represents slope?

• y

• m

• x

• b

In slope intercept form (y= mx+b) which variable (letter) represents y-intercept?

• y

• m

• x

• b

Given the table, what is the slope of the function?

• 1/2

• 6/3

• 4/2

• 2/1

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.