Arithmetic and Geometric Sequences

The "a" value in f(x)=a(b)^x for geometric sequences represents what?

• first term
• term we're looking for, minus one
• common difference
• common ratio

The "m" value in f(x)=mx+b for arithmetic sequences represents what?

• first term

• term we're looking for, minus one

• common difference

• common ratio

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

The "b" value in f(x)=a(b)^x for geometric sequences represents what?

• first term
• term we're looking for, minus one
• common difference
• common ratio

Tags

CCSS.8.F.A.1

The "b" value in f(x)=mx+b for arithmetic sequences represents what?

• first term

• term we're looking for, minus one

• common difference

• common ratio

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

An arithmetic sequence is a sequence with a common _________.

• difference
• ratio
• absolute value
• domain

Tags

CCSS.8.F.B.4

A geometric sequence is a sequence with a common _________.

• difference

• ratio

• formula

• absolute value

What formula would you use to find a term for

6, 24, 42, 60, ...?

• f(x) = a(b)^x

• f(x) = mx + b

Tags

CCSS.8.F.B.4

What formula would you use to find a term for

6, 18, 54, 162, ...?

• f(x) = a(b)^x

• f(x) = mx + b

Tags

CCSS.8.EE.A.1

CCSS.8.F.A.1

The first term in an arithmetic sequence is 142 and the common difference is 55.  What is the 12th term?

• 747
• 605
• 1617
• 802

Tags

CCSS.8.EE.C.7

The first term in an arithmetic sequence is -8 and the common difference is 14.  What is the 28th term?

• 378
• 1024
• -324
• 370

Tags

CCSS.8.EE.C.7

CCSS.8.F.B.4