Download Chapter 1 : Summative Assessment

Chapter 1 : Summative Assessment
Describe the trend. Explain whether there is a positive relationship, a negative
relationship, or no relationship between the sets of data in the scatter plot.
1.
2.
3.
4. Which relationship would most likely have no correlation?
A. A person's age, and the address of the person.
B. The number of pizzas ordered, and the total price of the bill.
C. A person's height and the person's shoe size.
D. The number of miles driven, and the number of gallons of gas in the car.
5. Which relationship would most likely have a positive correlation?
A. the rate at which a train travels, and the time it takes for it to reach its destination.
B. the number of tickets sold for a baseball game, and the number of hotdogs sold at the game.
C. the number of miles driven, and the number of gallons of gas in the car.
D. the amount of memory in computer, and the number of keys on the keyboard.
6. Rose measured the depth of water in a bathtub at two-minute intervals after the tap was turned on. The table
shows the data prepared by her. Pick the appropriate scatter plot for the data.
Time (in
minutes)
Depth (in
cm)
2
7
4
8
6
13
8
19
10
20
12
24
14
32
16
37
18
38
20
41
22
47
ordered pair: (x,y)
domain: x-coordinates in a relation
range: y-coordinates in a relations
Graph the ordered pairs.
(3,2), (5,4), (6,2), (12,7)
Graph the ordered pairs.
(9,6), (8,2), (1,0), (0,6), (8,14)
Domain:
Range:
Domain:
Range:
:
*
*
*
*
*
*
*
*
Identify the ordered pairs. Display the data as a relation and table.
Write a numerical expression.
Example: the product of nine and three
93
Practice
ten increased by three
the difference between twenty-seven and ten
Evaluate the expression. b = 8, t = 3, and s = 10
Example: (b + 9) – t
(8 + 9) – 3
20
Practice. b = 8, t = 3, s = 10
25t + 3b – 5
(2b – 5)
t-2
2
Simplify the algebraic expressions. Justify your answer using properties of multiplication,
addition, and equality.
Example:
(9  n)  6
(n  9)  6 Commutative property of multiplication
n  (9  6) Associative property of multiplication
54n
Substitution property of equality
Practice:
n1
5  (z  7)
8s  0
Write the algebraic expression.
Example: a number increased by ten
n + 10
Practice:
ten less than a number
a number squared
Solve the algebraic expression.
Example: 7 + v = 21
v = 14
Practice:
14n = 28
45  n = 5
89 + z = 11