Functions
Evaluating Functions
Fill in the blank
What's the pattern?
Graph What?
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
Find the next 3 terms
-5, -10, -15, -20, ...
-25, -30, -35
100
Based on the graph of function, What is y when x=2?
y = 3
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
What is the common difference?
23, 26, 29, 32, ...
d = 3
200
Based on the graph of function, what is y when x=0?
y = 4
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
Write a formula for the sequence below
2, 7, 12, 17, ...
an= 5(n-1)+ 2
300
Based on the graph of the function, what is y when x=4?
y = -2
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
Find the 52nd term in the sequence
12, 8, 4, 0, -4, ...
-192
400
f(x) = 6x - 10
f(-3)
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
Find the 212 term of the sequence
-10, -13, -16, -19, ...
-643
500
Given f(x) = -x + 9, if f(x) = 10
x = -1