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Algebra 1 Systems of Equations
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Phuong is checking the shipment, in which there are boxes of laser printers which cost $700 each and color monitors which cost $200 each. She sees that there are 30 boxes, and the order totals $15 000. Write a system of two equations.
x + y = 30 and 700x + 200y = 15 000
Solve
infinitely many solutions
Find two numbers whose sum is 28 and difference is 2
13 and 15
Five years ago, the age of Niraj was seven times that of his son Girish. Five years from, his age will be three times that of his son. Represent this problem as linear equations in two variables.
x = 7y - 30 and x = 3y + 10
Solve:
infinitely many solutions
Solve
no solution
Name two methods of solving systems of two equations.
Substitution, Elimination.
Solve:
(4, 1)
Solve:
(-5, 1)
Solve:
(-2, 1)
Solve:
(-3, 2)
Solve:
No solution
Solve:
(0, -3)