
Arithmetic Sequences and Variable Elimination

Interactive Video
•
Mathematics
•
7th - 10th Grade
•
Hard
+7
Standards-aligned

Ethan Morris
FREE Resource
Standards-aligned
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main topic discussed in this video?
Finding the sum of an arithmetic sequence
Solving quadratic equations
Calculating the 20th term of an arithmetic sequence
Understanding geometric sequences
Tags
CCSS.HSF.BF.A.2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of the 3rd term in the sequence?
11
5
3
26
Tags
CCSS.HSF.BF.A.2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which equation represents the 8th term of the sequence?
a + 19b = 62
a + 2b = 11
a + 7b = 26
a + b = 8
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What method is used to eliminate the variable 'a' from the equations?
Factoring
Elimination
Graphing
Substitution
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of 'b' after solving the equations?
3
11
5
26
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After finding 'b', what is the next step to find 'a'?
Use the quadratic formula
Substitute 'b' into the first equation
Graph the equations
Multiply both equations
Tags
CCSS.6.EE.A.2C
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of 'a' after substitution?
3
11
5
26
Tags
CCSS.HSF.BF.A.2
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