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Arithmetic Sequences  Problem 11
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
Since an arithmetic sequence has a constant difference, d, we can graph it much like we would a linear relationship with a constant slope. Let the independent axis, or x axis, represent the term number and the term itself will be graphed on the dependent, or y axis. Hence, the first term in your number pattern will be the ycoordinate that is paired with x = 1. You should end up with a relatively linear result where d is the slope, or constant change, from one term to the next.
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
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Sample Problems (19)
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Arithmetic Sequences
Problem 1 11,053 viewsGiven 11, 7, 3...
Find a_{301}. 
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Problem 2 8,442 viewsGiven a_{20} = 101 and a_{21} = 104,
find the general term, a_{n}. 
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Problem 3 7,817 viewsGiven a_{11} = 52, a_{19} = 92,
find a_{1001} 
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Problem 4 7,276 viewsFind the number of terms:
7 , 13 , 19 ... 85 3 3 3 3 
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Problem 5 1,218 views 
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Problem 6 1,304 views 
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Problem 7 1,061 views 
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Problem 8 1,369 views 
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Problem 9 940 views 
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Problem 10 865 views 
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Problem 11 971 views 
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Problem 12 874 views 
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Problem 13 831 views 
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Problem 14 851 views 
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Problem 15 838 views 
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Problem 16 870 views 
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Problem 17 846 views 
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Problem 18 814 views 
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Problem 19 818 views
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