solving Systems (elimination, substitution)

Flashcard
•
Mathematics
•
8th - 9th Grade
•
Hard
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8 questions
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1.
FLASHCARD QUESTION
Front
What is a system of equations?
Back
A set of two or more equations with the same variables.
2.
FLASHCARD QUESTION
Front
What is the elimination method?
Back
A technique for solving systems of equations by eliminating one variable, allowing for the other to be solved.
3.
FLASHCARD QUESTION
Front
What is the substitution method?
Back
A technique for solving systems of equations by solving one equation for one variable and substituting that expression into the other equation.
4.
FLASHCARD QUESTION
Front
When is the elimination method preferred over substitution?
Back
When the coefficients of one variable are easily manipulated to eliminate that variable.
5.
FLASHCARD QUESTION
Front
What does it mean if a system of equations has no solution?
Back
The lines represented by the equations are parallel and never intersect.
6.
FLASHCARD QUESTION
Front
What does it mean if a system of equations has infinitely many solutions?
Back
The equations represent the same line, meaning every point on the line is a solution.
7.
FLASHCARD QUESTION
Front
Solve by elimination: 2x + 3y = 6 and 4x - 3y = 12.
Back
(3,0)
8.
FLASHCARD QUESTION
Front
Solve by substitution: y = 2x + 1 and 3x + y = 12.
Back
(3,7)
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