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Duplicate of Functions
Duplicate of Functions
23 terms
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Pre-Algebra basics working with function rules, rate of change, and initial values
Flashcards
23 cards
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Questions
23
Answers
1
How can a linear function be represented?
Algebraically (an equation)
On a graph (a line)
Numerically in table (x- and y- chart)
Verbally description
2
What is the function rule represented by the line in the graph?
y = x - 3
y = -3x + 3
y = 3x - 3
y = -x + 3
3
Which of the following best represents a function rule?
y + 4 = 3x
x = 2y - 9
7x -1 = y
y + (1/2)x = 0
4
Heriberto and Isaac are saving money to buy a car. They have $10 but plan on saving $20 a week.
y = 10x + 20
y = 20x + 10
y = 10x - 20
y = 20x - 10
5
Describe the slope of this line
Negative
Positive
Undefined (Does Not Exist)
No Slope (m = 0)
6
Which assistant principal is visiting this classroom right now?
Mrs. Reed
Mrs. Milosavljevic
Mrs. Owens
Mrs. Pham
7
What is a function? What are they used for?
Every input has exactly one ouput
A relationship between 2 variables
All of the above
Used to predict a totals (output) given any input value
8
What is the rate of change of the line whose equation is: y = (-2/3)x - 4
-2/3
-4/1
(-2/3)x
-4
9
What is the initial value of the equation whose line is: y + 3 = (1/2)x
1/2
3
-3
0
10
What is the initial value of the line whose equation is: -y = 6x - 15
-15
15
6
-6
11
What is the rate of change of the line whose equation is: 3y = 2x - 4
-4
-4/3
2
2/3
12
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
13
Describe the slope of the line
Negative
Positive
Undefined (Does Not Exist)
No Slope (m = 0)
14
Which of the following best represents rate of change?
initial value
y-intercept
slope
function rule
15
What is the function rule represented by the line on this graph?
y = -4x - 2
y = -x - 2
y = 2x -1
y = -2x -2
16
What is the initial value of the line whose equation is: y = 3x - 2
0
2
-2
3
17
My friend charges me $50 plus $1.50 per mile to borrow her car. Which represents the cost?
y = 150x + 50
y = 50x + 1.5
y = 1.5x + 50
y = 50x + 150
18
Describe the slope of this line
Undefined (Does Not Exist)
No Slope (m = 0)
Positive
Negative
19
Which of the following best represents initial value?
y-intercept
function rule
rate of change
slope
20
Which of the following best represents rate of change in the equation y = mx + b
y
m
x
b
21
Describe the slope of the line
No Slope (m = 0)
Postive
Negative
Undefined (Does Not Exist)
22
What is the initial value of the line whose equation is: 2y = 3x + 8
4
2
3
8
23
Which of the following best represents initial value in the equation y = mx + b
b
m
y
x
