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Functions
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Pre-Algebra basics working with function rules, rate of change, and initial values
Flashcards
27 cards
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Practice quiz
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Questions
27
Answers
1
Who is this?
Ratatouille
Stuart Little
Remy
Mickey Mouse
2
Who is this?
Vixen
Dasher
Prancer
Rudolph
3
My mom charges me $50 plus $1.50 per mile to borrow her car. Which represents how mean she is?
y = 50x + 1.5
y = 50x + 150
y = 1.5x + 50
y = 150x + 50
4
What is the rate of change of the line whose equation is: y = (-2/3)x - 4
-4/1
-2/3
-4
(-2/3)x
5
Describe the slope of this line
No Slope (m = 0)
Negative
Undefined (Does Not Exist)
Positive
6
Describe the slope of this line
Negative
Undefined (Does Not Exist)
Positive
No Slope (m = 0)
7
What is the function rule represented by the line in the graph?
y = x - 3
y = 3x - 3
y = -x + 3
y = -3x + 3
8
Heriberto and Isaac are saving money to buy a car. They have $10 but plan on saving $20 a week.
y = 20x - 10
y = 20x + 10
y = 10x - 20
y = 10x + 20
9
What is the initial value of the equation whose line is: y + 3 = (1/2)x
0
1/2
-3
3
10
Which of the following best represents initial value?
y-intercept
rate of change
slope
function rule
11
What is the initial value of the line whose equation is: y = 3x - 2
-2
2
0
3
12
What is the rate of change of the line whose equation is: 3y = 2x - 4
-4/3
-4
2
2/3
13
Which of the following best represents initial value in the equation y = mx + b
b
y
m
x
14
Describe the slope of the line
Undefined (Does Not Exist)
Positive
Negative
No Slope (m = 0)
15
How can a linear function be represented?
Numerically in table (x- and y- chart)
Algebraically (an equation)
Verbally description
On a graph (a line)
16
What is the initial value of the line whose equation is: -y = 6x - 15
15
-15
6
-6
17
Which of the following best represents a function rule?
7x -1 = y
x = 2y - 9
y + 4 = 3x
y + (1/2)x = 0
18
Which of the following best represents rate of change?
initial value
slope
y-intercept
function rule
19
Describe the slope of the line
No Slope (m = 0)
Undefined (Does Not Exist)
Postive
Negative
20
Jo's PS4 game club charges $10 per month & $2 per game. Which function rule represents a month?
y = 10x + 2
y = 10x - 2
y = 2x - 10
y = 2x + 10
21
Which assistant principal is visiting this classroom right now?
Mrs. Pham
Mrs. Owens
Mrs. Reed
Mrs. Milosavljevic
22
Who is this?
John F. Kennedy
George Washington
Abraham Lincoln
Thomas Jefferson
23
Which of the following best represents rate of change in the equation y = mx + b
m
b
y
x
24
What is the function rule represented by the line on this graph?
y = 2x -1
y = -2x -2
y = -x - 2
y = -4x - 2
25
Why is a linear function that is modeled by the equation
y=mx+b
useful
?
You can easily find the rate of change (slope)
You can easily graph the line of the function
You can easily find the initial value (y-intercept)
All 3 are reasons why it is useful
26
What is a function? What are they used for?
Every input has exactly one ouput
All of the above
Used to predict a totals (output) given any input value
A relationship between 2 variables
27
What is the initial value of the line whose equation is: 2y = 3x + 8
8
3
2
4
