Geometric and Recursive Sequences
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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19 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the common ratio of this geometric sequence?
500, 200, 80, 32, ...
-5/2
-2/5
2/5
5/2
Tags
CCSS.HSF.BF.A.2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a geometric sequence, a4 = −9 and a6 = −81. What is the recursive formula for this sequence?
Tags
CCSS.HSF.BF.A.2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a geometric sequence, a4 = 18, a5 = 6, and a6 = 2. What is the explicit formula for this sequence?
an = 2(3)n-1
an = 18(3)n-1
an = 18(1/3)n-1
an = 486(1/3)n-1
Tags
CCSS.HSF.BF.A.2
4.
DRAG AND DROP QUESTION
1 min • 1 pt
initial value
increment
starting point
change rate
common ratio
opens up/down
distance
slope
first term
common difference
Tags
CCSS.HSF.BF.A.2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Arithmetic Sequence
Geometric Sequence
Neither
Tags
CCSS.HSF.BF.A.2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Write a recursive formula for the following sequence: 16,8, 4, 2,...
a1=16
an=an-1 (2)
a1=16
an=an-1 (1/2)
a1=16
an=an-1 + (1/2)
a1=16
an=an-1 - 8
Tags
CCSS.HSF.BF.A.2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Write an explicit rule for the general term of the sequence 5, 15, 45, . . . ?
an = an-1 x 3
an = 5(3)n-1
an = 3(5)n-1
an = 5 + (n-1)3
Tags
CCSS.HSF.BF.A.2
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