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Systems of Equations, Systems of Equations
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Solving systems of linear equations both with graphs and algebraic methods.
Key Concepts:
Terms in this set (10)
(4, -4)
(-1, -1)
no solution
y = 2x + 5
y = 2x - 7
infinite solutions
y = -4x + 2
4x + y = 2
(4, 3)
2x - 3y = -1
y = x - 1
(2, 3)
y = 5x - 7
-3x - 2y = -12
(6, -6)
-4x - 2y = -12
4x + 8y = -24
(10, -1)
x - y = 11
2x + y = 19
C
The equations 5x + 2y = 48 and
3x + 2y = 32 represents the money collected from school concert ticket sales during two class periods. If x represents the cost of ADULT tickets and y represents the cost of STUDENT tickets, what is the cost of each adult ticket?
a. $20
b. $10
c. $8
d. $4
C
Pam is playing with red and black marbles. The number of red marbles she has is three more than twice the number of black marbles. She has 42 marbles in all. How many red marbles does Pam have?
a. 13
b. 15
c. 29
d. 33
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