Math Functions

Using the table, what is the output value when the input is 0?

• 5

• 3

• 4

• 7

The inputs are the x or the y values?

• x

• y

• neither

Is this set of ordered pairs a function and how can you tell?

• Yes its a function because no y values repeat

• No it's not a function because there are negative numbers

• No it isn't a function because an x value repeats but has different y values 

• No it isn't a function because an y value repeats but has different x values

The mapping ​ (a)   y as a function of x, because ​ (b)  

• does not represent

• does represent

• each x-value corresponds to more than one y-value

• each x-value corresponds to only one y-value

Select the correct independent and dependent parts of the graph .

(choose 2 answers)

• The dependent variable is total cost

• The dependent variable is weight

• The independent variable is total cost

• The independent variable is the weight of the package

• the independent variable is distance
• the independent variable is d=25 t
• the dependent variable is time
• the dependent variable is distance

• The dependent variable is total cost
• The dependent variable is weight
• The independent variable is total cost
• The independent variable is cost of a package

Conner has $25,000 in his bank account. Every month he spends $1,500. He does not add money to the account.
 Write a linear model that shows how much money will be in the account after x months. 

• y=25000x-1500

• y=25000+1500

• y=1500x+25000

• y=-1500x+25000

You plan to go snowboarding. The resort charges $15 an hour in addition to $25 to rent a board. Write an equation that represents the cost to go snowboarding for the day.

• y=15x-25

• 15x+25y=100

• 25x+y=15

• y=15x+25

What is the y-intercept?

• 7

• 0

• 1

• 2