Substitution Method
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a system of equations?
Back
A system of equations is 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 if a system of equations has infinite solutions?
Back
It means there are unlimited pairs of (x, y) values that satisfy both equations.
Tags
CCSS.8.EE.C.8B
3.
FLASHCARD QUESTION
Front
Solve the system of equations by substitution: y = -4x + 5 and y = 3x - 16.
Back
(3, -7)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
4.
FLASHCARD QUESTION
Front
Solve for (x, y) given: x = y - 2 and 4x + y = 2.
Back
(0, 2)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
FLASHCARD QUESTION
Front
Solve the system: x = -3y - 17 and 2x + 3y = -7.
Back
(10, -9)
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
FLASHCARD QUESTION
Front
What is the first step in the substitution method?
Back
Isolate one variable in one of the equations.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
7.
FLASHCARD QUESTION
Front
How do you check if your solution to a system of equations is correct?
Back
Substitute the solution back into both original equations to see if they hold true.
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
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