The Vocab
Are You Having Fun(ction)?
Absolute Functions
Independent or Dependent Variable
What's my function?
Domain and Range
100
This word is used to describe the set of all inputs for a function.
What is the domain?
100
Is the following a function?
(1, 0), (2, 2), (3, 4)?
yes
100
Absolute Values always have what type of answer?
Positive Answers Only!
100
If a movie store rents movies for 3.95 each which of the following is the independent variable?
The number of movies
The cost to rent the movies
The number of movies
100
f(-3) if f(x) = 2x +1
-5
100
Find the DOMAIN:
{(-2, 4), (3, 2), (2, 10)}
What is {-2, 2, 3}?
200
This word is used to describe the set of all outputs of a function.
What is the range?
200
Is the following a function?
(1, 1),
(4, 1),
(5, 2),
(1, 2),
(2, 5)?
No, because the input 1 has two different outputs
200
Describe what the equation is telling us about our graph. g(x)= -2 | x - 1 | + 3
negative graph, narrow, to the right one, and up 3
200
Is TIME normally the independent or dependent variable?
Independent
200
f(12) if f(x) = 3x -5
31
200
Find the RANGE:
{(-2, 4), (3, 2), (2, 10)}
What is {2, 4, 10}?
300
This word describes a relation that pairs each x value with only one y value.
What is a function?
300
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)
300
Describe what the equation is telling us about our graph. m(x) = 1/2 | x + 4 | -1
wider graph, to the left 4, down 1
300
Is COST normally the independent or dependent variable?
Dependent
300
f(2) if f(x) = x-4
-2
300
Find the DOMAIN:
x y
-1 -4
0 1
2 5
4 6
What is {-1, 0, 2, 4}?
400
The point on the absolute value graph where the graph changes direction.
(h,k)
What is the vertex
400
Is this a function and why?
What is no, because x's repeat at 8
400
solve the following equation
| 5x - 7 | -3 = 9
19/5 and -1
400
The independent variable the X or Y axis?
X axis
400
f(5) if f(x) = 2x+8
18
400
Find the RANGE:
y is between -2 and 3
500
This term identifies the variable that changes based upon the other variable in a function.
What is the dependent variable?
500
Is this a function and why?
What is yes, because the x's are all different and have different y's
500
solve the following equation
-7 - | x + 6 | = -12
-1 and -11
500
is the DEPENDENT variable graphed on the X or Y axis?
Y axis
500
f(2) if f(x) = x2 + 5
9
500
Find the DOMAIN:
What is {-2, 1, 2, 3}?