solving system of equations with substitution

Flashcard
•
Mathematics
•
8th Grade
•
Hard
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15 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 does it mean to solve a system of equations?
Back
Finding the values of the variables that satisfy all equations in the system.
3.
FLASHCARD QUESTION
Front
What is the substitution method?
Back
A method for solving a system of equations by solving one equation for one variable and substituting that expression into the other equation.
4.
FLASHCARD QUESTION
Front
How do you start solving a system of equations using substitution?
Back
Isolate one variable in one of the equations.
5.
FLASHCARD QUESTION
Front
If x = 2y + 3, what is y when x = 7?
Back
y = 2.
6.
FLASHCARD QUESTION
Front
What is the first step in using substitution to solve the system: x = -3y - 8 and x - 2y = -3?
Back
Substitute -3y - 8 for x in the second equation.
7.
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.
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