Arithmetic Sequences and Explicit Formula
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Standards-aligned
Anthony Clark
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the 38th term of this arithmetic sequence? {26, 22, 18, 14, ... }
-4
10
-122
174
Tags
CCSS.HSF.BF.A.2
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
What is: A list of numbers that increase or decrease by a constant rate
Geometric sequence
positive sequence
negative sequence
Arithmetic sequences
Tags
CCSS.HSF.BF.A.2
3.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Now we are going to find the value of larger terms:
Find the 10 term of the given sequence
a_n = 4n +2
38
42
-42
16
Answer explanation
This one is way easier than it sounds:
a(10) = 4(10) + 2
= 40+2
= 42
Tags
CCSS.HSF.BF.A.2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This is an arithmetic sequence and it shows you
a_0 a_1 and a_2
What is the explicit formula?
a_n = 4n + 1
a_n = n + 4
a_n = 4n - 1
a_n = 5n +1
Tags
CCSS.HSF.BF.A.2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Is this an arithmetic sequence?
Maybe
Yes
No
Answer explanation
The rate is not constant, which is required in arithmetic sequences.
So no, its not arithmetic
Tags
CCSS.HSF.BF.A.2
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
What two things do you need to write the explicit formula? (Choose two and look carefully)
the last term
The zero term (when x=0)
Constant rate
changing rate
Answer explanation
You need to find the rate of how the y's change, and then find the f(x) value when x is zero.
Tags
CCSS.HSF.BF.A.2
7.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
What is the rate of this arithmetic sequence?
-2
2
1
14
Tags
CCSS.HSF.BF.A.2
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