Just Riddles
Functional Existence
Fucntional Evaluation
Wordy Functions
Graphic Functions
100
What month of the year has 28 days?
All of them
100
In a function, how many outputs can one input have?
Each input has one and only one output.
100
Evaluate y = 2x +1 when the independent variable is 2.
y = -5
100
Whats the function (equation) if John gets paid $10 per hour(x)
y = 10x
100
Based on the graph of function, What is y when x = 2?
y = 3
200
What is cut on a table, but is never eaten?
A deck of cards
200
Yes
200
Evaluate y = 7x + 1, when the independent variable equals 4.
y = 29
200
Write an function for the following story:
Sally wants to go to an amusement park. The amusement park cost $120 per day(x) and an additional fee of $50.
y = 120x + 50
200
Based on the graph of function, what is y when x =-5?
y = 0
300
What has a head and a tail but no body?
A Coin
300
Is this a function and why?
No because x=8 has two outputs (3 and -3)
300
Evaluate y = 1/4x - 2 when the input is 8.
y = 0
300
You go to Florida and want to go jet skiing. It cost $100 per person(x) and $75 for the tour guide. What function represents this equation.
y = 100x + 75
300
Based on the graph of the function, what is y when x = 4?
y = -2
400
If there are three apples and you take away two, how many apples do you have?
You have two apples
400
Does the following table represent a function?
x y
1 2
2 5
6 2
2 9
5 1
No, because the input (x) of 2 has two different outputs (y)
400
Evaluate y = x3 when x= 2
y = 8
400
At the local cafe, a salad cost $5.75. Additional toppings cost $0.50 each. What is the function that represents the situation.
y = 0.50x + 5.75
400
Based on the function, what is y when x = -3?
y = -3
500
Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?
The letter “r”
500
No, vertical lines are not functions.
500
If x= 2 evaluate the function y = 2x + 4
x = 8
500
You take a class trip to the ice cream shop. They charge $5.00 for a cup of ice cream and $1.25 per topping added. What is the function that represents this problem?
y = 1.25x + 5
500
Based on the function, what is x when y= 2
x=0