Solve for x and y: 3x + 2y = 16; 7x + y = 19
Algebra I Semester Review Part 2

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Mathematics
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9th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
(2, 5)
2.
FLASHCARD QUESTION
Front
Which equations could be used to determine the cost of the coffee? Joe bought 10 cups of coffee and 5 doughnuts for $16.50 on Monday and 5 cups of coffee and 10 doughnuts for $14.25 on Tuesday.
Back
10c + 5d = 16.50; 5c + 10d = 14.25
3.
FLASHCARD QUESTION
Front
Solve the system of equations: y = 4x + 1; 3x + 2y = 13
Back
(1, 5)
4.
FLASHCARD QUESTION
Front
Which system of equations could be used to find the number of toppings when both companies cost the same? A large pizza at Palanzio’s costs $6.80 + $0.90 per topping; Guido’s costs $7.30 + $0.65 per topping.
Back
y = 6.80 + 0.90x; y = 7.30 + 0.65x
5.
FLASHCARD QUESTION
Front
What is the solution to the system?
Back
(1, 3)
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 to solve a system of equations?
Back
Finding the values of the variables that satisfy all equations in the system.
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