Algebra 1-Unit 3 Functions

• Sales increased steadily for a few days. Sales then decreased before beginning to increase again.
• Sales decreased at first, then began to increase steadily.
• Sales increased steadily, then stayed constant for a few days. Then the sales increased again.
• There is not enough data to describe the situation.

Identify the domain and range for the given relation. Tell whether the relation is a function and explain.

• D:{-1,0,1}; R:{0,1,2}; no; 0 is paired with 0 and 1.
• D:{-1,0,1}; R:{0,1,2}; yes; each domain value is paired with exactly one range value.
• D:{0,1,2}; R:{-1,0,1}; no; 0 is paired with 0 and 1.
• D:{0,1,2}; R:{-1,0,1}; yes; each domain value is paired with exactly one range value.

Tags

CCSS.8.F.A.1

Identify the independent and dependent variables, and write an equation in function notation for the given situation:
A concert ticket costs $60.

• independent: number of tickets; dependent: cost; rule: f(t)=60t
• independent: cost; dependent: number of tickets; rule: f(60t)=t
• independent: number of tickets; dependent: cost; rule: f(60t)=t
• independent: cost; dependent: number of tickets; rule: f(t)=T+60

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

• f(77)=67
• f(77)=59
• f(77)=49
• f(77)=39

Tags

CCSS.HSF.IF.A.2

Identify the correlation you would expect to see between the weight of baggage someone carries and the speed at which he or she walks. Explain.

• negative correlation; as the weight of the baggage increases, the speed at which the person walks decreased.
• positive correlation; as the weight of the baggage increases, the speed at which the person walks decreased.
• no correlation; a person walks at an equal speed regardless of the weight carried.
• none of the above

Tags

CCSS.HSF-LE.A.1B

Identify the correlation you would expect to see between the weight and age of a child. Explain.

• negative correlation; the weight of a child decreases with age.
• positive correlation; the weight of a child increases with age.
• no correlation; the weight and age of a child are not related to each other.
• none of the above

Tags

CCSS.HSF-LE.A.1B

Suppose the scatter plot shows the number of immigrants to a small country since the year 2000. Based on this relationship, predict the number of immigrants in the year 2007.

• 300
• 400
• 800
• 1100

Tags

CCSS.HSF.IF.B.4

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Which of the following is NOT an arithmetic sequence?

• 5, 6, 7, 8, ...
• 4, 6, 11, 12, ...
• 4, 6, 8, 10, ...
• 10, 20, 30, 40, ...

Tags

CCSS.HSF.BF.A.2

Find the 40th term of the arithmetic sequence.
-1, -5, -9, -13, -17, ...

• -159
• -160
• -157
• -161

Tags

CCSS.HSF.BF.A.2

• D: {1, 4, 9}; R{1, 2, 3}; no. 1 is an element of the domain and the range.
• D: {1, 2, 3, 4}; R: {1, 4, 9, 16}; yes; each domain value is paired with exactly one range value.
• D: {1, 2, 3, 4}; R: {1, 4, 9, 16}; no; 1 and 4 are elements of the domain and range.
• D: {1, 4, 9, 16}; R: {1, 2, 3, 4}; yes; each domain value is paired with exactly one range value.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1