Algebra I - Winston-Salem/Forsyth County Schools
Common Core Math 1
Day 1 – Class Notes - Geometric Sequences Review
Arithmetic Sequence (pattern is__________) vs Geometric Sequence (pattern is__________)
NEXT= starting at NEXT= starting at
y = _________________________________ y = _________________________________
I. Review
1)
|x |0 |1 |2 |3 |4 |
|y |72 |36 |18 |9 |4.5 |
|x |0 |1 |2 |3 |4 |
|y |3 |15 |75 |375 |1875 |
(a) NEXT= starting at (a) NEXT= starting at
(b) (b)
Type: Type:
of function of function
(c) [pic] (c) [pic]
(d) Find y if [pic]. (d) Find y if [pic].
(e) Type of Sequence: (e) Type of Sequence:
II. Practice
3) 4)
|x |0 |1 |2 |3 |4 |
|y |2 |10 |50 |250 |1250 |
|x |0 |1 |2 |3 |4 |
|y |100 |75 |56.25 |42.1875 |31.64… |
(a) NEXT= starting at (a) NEXT= starting at
(b) (b)
Type: Type:
of function of function
(c) [pic] (c) [pic]
(d) Find y if [pic]. (d) Find y if [pic].
(e) Type of Sequence: (e) Type of Sequence:
III. Translate to sequence vocabulary AJDUST FOR STARTING WITH x = 1 instead of x = 0.
1) The sequence 10, 20, 40, 80… 2) The sequence 30, 15, 7.5, …
(a) NEXT= starting at (a) NEXT= starting at
(b) Type of function: (b) Type of function:
(c) [pic] (c) [pic]
(f) Type of Sequence: (f) Type of Sequence:
(e) Find the 12th term (e) Find the 8th term
3) The sequence 7, 21, 63, 189
(a) NEXT= starting at
(b) Type of function:
(c) [pic]
(f) Type of Sequence:
(e) 137781 is the _____ term of the sequence
IV. Practice and Extend
1) The sequence of 6250, 1250, 250, 50… 2) The sequence of 50, 150, 450, 1350
(a) NEXT= starting at (a) NEXT= starting at
(b) Type of function: (b) Type of function:
(c) [pic] (c) [pic]
(f) Type of Sequence: (f) Type of Sequence:
(e) Find the 7th term_________________ (e) 36,450 is the ___ term of the sequence
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