Arithmetic Sequences and Explicit Formulas

Arithmetic Sequences and Explicit Formulas

9th Grade

19 Qs

quiz-placeholder

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Arithmetic Sequences and Explicit Formulas

Arithmetic Sequences and Explicit Formulas

Assessment

Quiz

Mathematics

9th Grade

Medium

CCSS
HSF.BF.A.2

Standards-aligned

Created by

Rachel M K

Used 3+ times

FREE Resource

19 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

FYI, The picture is an example of the **explicit formula**

What does the -3 represent?

The constant rate of change

The y-intercept

An x-value

Tags

CCSS.HSF.BF.A.2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What does the 10 represent?

The constant rate of change

When the nth term is zero (the zero term)

An x-value

Tags

CCSS.HSF.BF.A.2

3.

MULTIPLE CHOICE QUESTION

30 sec • 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

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

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

5.

MULTIPLE SELECT QUESTION

45 sec • 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

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

**This question requires some thinking**

If the first term (when n=1) of a sequence is 7 and the common difference is 6, what is the explicit formula?

(take your time)

a_n = 7n - 6

a_n = 6n - 7

a_n = 7n + 6

a_n = 6n + 1

Answer explanation

When n=1, the value is 7. But we need to find when n=0. So, just subtract 7 by 6 (the rate) to find n=0

Tags

CCSS.HSF.BF.A.2

7.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

How do you feel so far about the topic?

Good!

Um... not so good

Bad

Answer explanation

Dont worry, we will work on this more. Don't rush, and read the question carefully

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