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y = 5x + 7
3y - 15x = 18
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y = 3x + 6
y = -13x - 4
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x - 2y = 6
3x - 6y = 18
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y = 23x - 1
y = 23x - 2
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Judy has $100 and Elenore has $75. Judy is saving $5 per day and Elenore is saving $7 per day.

What equation represent how much money Judy will have in total after saving for d days?
What equation represents how much money Elenore will have in total after saving for d days?
What equation would be used to find out how many days it will take for Judy and Elenore to have the same amount of money saved? After the number of days it took both to have the same amount of money saved, how much money do they have each?
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The solution to a system of two linear equations is x = 3 weeks; y = 9 feet Match the description with the correct statement.

How could you get exactly two or three solutions to this linear system?
How would you locate the solution of the two linear graphs on the coordinate plane?
The solution to this system could possibly have this meaning.
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How could you check to see if the point (5, 6) is the solution to the Linear System of equations?

Substitute 6 in for x and 5 in for y in one of the equations to see if the equation is true.
Substitute 5 in for x and 6 in for y in both of the equations to see if both equations are true.
Substitute 6 in for x and 5 in for y in both of the equations to see if both equations are true.
Substitute 5 in for x and 6 in for y in one of the equations to see if the equation is true.
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