Riddle me this
Am I a function?
What's my function?
Fill in the blank
Graphing
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 x = -3
y = -5
100
A table of values for a linear function is given. Fill in the missing value.
x -1 0 1
y 3 8 ?
y = 13
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= x2 + x + 1 when x = -5
y = 21
200
A table of values for a linear function is given. Fill in the missing value.
x -1 0 1
y 3 -2 ?
y = -7
200
Based on the graph of function, what is y when x=0?
y = 4
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 = x2 - 2 when x = -2
y = 2
300
A table of values for a linear function is given. Fill in the missing value.
x 2 3 5
y 2 1 ?
y = -1
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 = 4x2 - 1 when x= -2
y = 15
400
A table of values for a linear function is given. Fill in the missing value.
x -21 0 21
y -4 -7 ?
y = -10
400
How can you tell if a graph is a function or not?
use the vertical line test!
500
What do you call a pony when it loses its voice?
A little hoarse.
500
No, vertical lines are not functions.
500
If y = 8 what is x if y = 2x + 4
x = 2
500
Find the 212 term of the sequence
-10, -13, -16, -19, ...
-643
500
When using the vertical line test, how do you know if the graph is NOT a function?
If a vertical line touches more than one point!