Unit 5 Test Review: Systems and Word Problems
Flashcard
•
Mathematics
•
8th - 9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Solve by elimination: 7x + y = -9 and -3x - y = 5
Back
(-1,-2)
2.
FLASHCARD QUESTION
Front
When does a system of equations have no solutions?
Back
When the slopes are the same.
3.
FLASHCARD QUESTION
Front
Solve by elimination: -9x - 4y = -20 and 5x + 4y = 4
Back
(4,-4)
4.
FLASHCARD QUESTION
Front
There are 15 animals in a barn. These animals are horses and chickens. There are 44 legs in all. Which system of equations represents the situation?
Back
x + y = 15 and 4x + 2y = 44
5.
FLASHCARD QUESTION
Front
Caitlin has 49 bills totaling $1430 with twenty dollar bills and fifty dollar bills. Which system best represents the situation?
Back
x + y = 49 and 20x + 50y = 1430
6.
FLASHCARD QUESTION
Front
What is a system of equations?
Back
A set of two or more equations with the same variables.
7.
FLASHCARD QUESTION
Front
What does it mean for two lines to be parallel in a system of equations?
Back
They have the same slope but different y-intercepts, resulting in no solutions.
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