Identifying Functions
Describing Functions
Let statements
Equations
Word Problems
100

Is this relationship a function?

yes, this is a function because every input has one output.

100

What is the rate of change?

60

100

Define the x and y variables.

let x = the number of hours

let y = the cost

100

y=25x+50

100

Nicole will earn $28 babysitting. 200 Is this relationship a function? No, this is not a function because an input of 8 has outputs of 21 and 34. 200 What is the slope and y-intercept? m=-1/2 and b=1 200 Define the x and y variables. let x = the number of days let y = the height of the plant 200 y=1.5x+5 200 The plumber will earn$425.

300

Is this relationship a function?

No, this is not a function because an input of 70 has two outputs.

300

What is the slope and y-intercept?

m=3 and b=-4

300

Define the x and y variables.

let x = the number of seconds

let y = the plane's altitude

300

y=-5x+8500

300

There is 255 gallons of water in the tank.

400

Is this relationship a function?

yes, this is a function because every input has one output.

400

Who types faster? Justify your answer!!

Morgan types 15 words per minute.

Brian types 20 words per minute.

Brian types faster than Morgan.

400

Define the x and y variables.

let x = the number of months

let y = the cost of internet service

400

y=18x+45

400

It costs $200 to rent the canoe for 6 hours. 500 Is this relationship a function? No, this is not a function because an input of 4 has outputs of 2 and -2. 500 Which plan is cheaper if a student needs to be tutored for 6 hours? Plan 2 500 Define the x and y variables. let x = the number of months let y = the cost of the gym membership 500 y=33x+30 500 Attorney A charges$4,150 for 26 hours.

Attorney B charges \$4,700 for 26 hours.

Attorney A has the better price.

Click to zoom