등차수열인가 등비수열인가

Daniel Math Academy · Grade 8 Math

Arithmetic or Geometric?

Skill V.1 · Arithmetic & geometric sequences · ★★☆ Medium

Name

 

Date

 

Score/ 8

Scan for answers

Write arithmetic (with d), geometric (with r), or neither.

1. 1
   $0,-4,-8,-12,\dots$
2. 2
   $13,14,16,19,\dots$
3. 3
   $4,9,16,25,\dots$
4. 4
   $1,4,9,16,\dots$
5. 5
   $4,5,7,10,\dots$
6. 6
   $-4,12,-36,108,\dots$
7. 7
   $2,10,50,250,\dots$
8. 8
   $5,-10,20,-40,\dots$

Daniel Math Academy · Grade 8 Math

Answer Key

V.1 Arithmetic or Geometric? · ★★☆ Medium

1. 1arithmetic, $d=-4$
2. 2neither
3. 3neither
4. 4neither
5. 5neither
6. 6geometric, $r=-3$
7. 7geometric, $r=5$
8. 8geometric, $r=-2$