Vocabulary
Straight up and down
A. Horizontal
B. Diagonal
C. Vertical
C. Vertical
x 1 - 2 - 3 - 4
y 5 - 6 - 7 - 8
Why is this a function
Because every input has one output
Work out this problem to match the equation to its ordered pair:
y = 2x + 5
A. (2,4)
B. (2,9)
C. (2,7)
B. (2,9)
y = 2x + 5
y = (2x2) + 5
y = 4 + 5
y = 9
Which of the following ordered pair is nonlinear with the inputs of 0,1,2 and 3
A. (0,1) (1,3) (2,4) and (3,6)
B. (0,1) (1,2) (2,3) and (3,4)
C. (0,0) (1,2) (2,6) and (3,9)
C. (0,0) (1,2) (2,6) (3,12) goes from increasing by 2, then 4, then 8, making it nonlinear
Topic 1-8 - Powers of 10 to Estimate Quantities
Which number is the largest?
A. 7 x 10-9
B. 8 x 10-8
C. 6 x 10-4
C. 6 x 10-4
7 x 10-9 = 0.000000007 (7 billionths)
8 x 10-8 = 0.00000008 (8 hundred millionths)
6 x 10-4 = 0.0004 (4 ten thousandths)
To arrange in a specific way
A. Order
B. Analyze
C. Diagram
A. Order
x y
1 2
3 4
5 6
7 8
Why is this a function
Because every input has one output
Work out the following problem to identify the equation represented by the ordered pair:
(0,-3) (2,1) (5,7)
A. y = 2x + 3
B. y = 3x - 2
C. y = 2x - 3
C. y = 2x - 3
(5,7)
y = (2 x 5) - 3
y = 10 - 3
y = 7
Which one of the following is nonlinear?
A. y = 7x
B. y = x2 + 3
C. y = 2(x + 5)
B. y = x2 + 3
Topic 2-1 - Combining Like Terms to Solve Equations
Solve for s: 9.99s + 7.99s = 53.94
A. 3
B. 5
C. 7
A. 3
9.99s + 7.99s = 53.94
17.98s = 53.94
17.98/17.98 = 53.94/17.98
s = 3
To say what you think may happen
A. Predict
B. Classify
C. Evaluate
A. Predict
Which one of the two following ordered pair can you get rid of to make a function? *There are 2 answers
(1,3) (2,4)
(1,7) (3,5)
(1,3) or (1,7)
Solve for y when x = 3
y = 2x + 5
A. y = 15
B. y = 11
C. y = 20
B. 11
y = 2x + 5
y = (2 x 3) + 5
y = 6 + 5
y = 11
Which two outputs are missing from the following points? (0,12) (2,8) (4,_) (6,_)
A. 0 and 4
B. 4 and 0
C. 6 and 10
B. 4 and 0
y = 12 - 4 = 8
y = 8 - 4 = 4
y = 4 - 4 = 0
Topic 2-4 - Equations with No or Infinite Solutions
Which of the following operations prove that 6 = 6 is true?
A. 6x - 6x +6 = 6x - 6x + 6
B. -6x + 6 - 6 = -6x + 6 - 6
C. 6 - 6x + 6 = 6 - 6x + 6
A. 6x - 6x + 6 = 6x - 6x + 6
0 + 6 = 0 + 6
6 = 6
To change something so that it is easier to understand
A. Explain
B. Simplify
C. Identify
B. Simplify
Mr. Morton is cooking dinner for his 8th grade class at his supper club. One ticket costs $25, (ticket, cost): (1,25) (2,50) (3,75). Why is this a function?
Because because every ticket quantity has exactly one cost. Or every input has one output. Or every ticket has one cost
Which of the following representations describe the same linear functions? y = 6x + 1
A. (2,15)
B. (1,8)
C. (0,1)
C. (0,1)
y = 6x + 1
y = (6 x 0) + 1
y = 0 + 1
y = 1
What is the constant rate of the graph that is on the card?
A. 2
B. -1
C. -2
C. -2
9 - 2 = 7
7 - 2 = 5
5 - 2 = 3
3 - 2 = 1
Topic 2-5 - Comparing Proportional Relationships
Mr. Morton is going apple picking, to make his students some apple pies. He is choosing three places to shop. Which place has the better deal?
A. Paris's Pick It Place at $5.00 for 12 pounds
B. Melton's Mountain O'Apples at 10 pounds for $20
C. Ms. Outerbridge's Orchard at $7.25 for 20 pounds
C. Ms. Outerbridge's Orchard at $7.25 for 20 pounds
A. $5/12lbs. = .42 per pound
B. $20/10lbs. = .50 per pound
C. $7.25/20lbs. = .36 per pound
To give out shares of something
A. Distribute
B. Relationship
C. Interpret
A. Distribute
Why is the relation on the card not a function?
Because the input #2 has two outputs
Mr. Morton has a tutoring service for math that charges $35 up front and $10 for each hour of tutoring. Using the formula y = 10x + 35, how much would he charge for 3 hours of service?
A. $50
B. $60
C. $65
C. $65
y = 10x + 35
y = (10 x 3) + 35
y = 30 + 35
y = 65
Which pair of points could extend y = 3x + 4?
A. (4,16) (5,19)
B. (4,15) (5,18)
C. (4,17) (5,20)
A. (4,16) (5,19)
y = 3x + 4 y = 3x + 4
y = (3 x 4) + 4 y = (3 x 5) + 4
y = 12 + 4 y = 15 + 4
y = 16 y = 19
Topic 2-7 - Analyzing Linear Equations (y=mx)
Write an equation to describe the relationship in the graph:
A. y = 10
B. y = 20
C. y = 30
B. y = 20
Y2 - Y1 = X2 - X1
(y) 80 - 60 = 20
______________
(x) 4 - 3 = 1
20/1 = 20