Solving Systems: Substitution

Flashcard
•
Mathematics
•
7th - 8th Grade
•
Hard
+2
Standards-aligned
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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 that are solved together.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
FLASHCARD QUESTION
Front
What does it mean to solve a system of equations by substitution?
Back
It means to solve one equation for one variable and then substitute that expression into the other equation.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
FLASHCARD QUESTION
Front
If y = 2x + 1, what is y when x = 1?
Back
y = 3.
Tags
CCSS.HSF.IF.A.2
4.
FLASHCARD QUESTION
Front
What is the first step in solving the system: y = 4x - 1 and y = 2x + 1?
Back
Set the two equations equal to each other: 4x - 1 = 2x + 1.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
FLASHCARD QUESTION
Front
What is the solution to the system: y = x - 2 and -2x + 3y = -1?
Back
(5, 3).
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
FLASHCARD QUESTION
Front
How do you isolate a variable in an equation?
Back
You perform operations to get the variable on one side of the equation by itself.
Tags
CCSS.6.EE.B.7
7.
FLASHCARD QUESTION
Front
What is the solution to the system: 5x + 4y = -14 and y = -7x - 15?
Back
(-2, -1).
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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