What is a system of equations?
REVIEW ALGEBRA 2 - SEMESTER 1

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Mathematics
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11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A set of two or more equations with the same variables. Solutions are the points where the equations intersect.
2.
FLASHCARD QUESTION
Front
What is substitution in solving systems of equations?
Back
A method where one equation is solved for one variable, and that expression is substituted into the other equation.
3.
FLASHCARD QUESTION
Front
What is elimination in solving systems of equations?
Back
A method that involves adding or subtracting equations to eliminate one variable, making it easier to solve for the other.
4.
FLASHCARD QUESTION
Front
How do you find the common difference in an arithmetic sequence?
Back
Subtract the first term from the second term. For example, in the sequence -34, -29, -24, -19, the common difference is -29 - (-34) = 5.
5.
FLASHCARD QUESTION
Front
What does it mean for a variable to be eliminated in a system of equations?
Back
It means that through the process of elimination, one variable can be removed, allowing for the other variable to be solved directly.
6.
FLASHCARD QUESTION
Front
What is a matrix?
Back
A rectangular array of numbers arranged in rows and columns.
7.
FLASHCARD QUESTION
Front
How do you determine the number of columns in a matrix?
Back
The number of columns is equal to the number of vertical arrangements of numbers in the matrix.
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