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Algebra

2. Use an augmented matrix to solve the system.
x + y = 5
3x – y = –1 (1 point)
(1, 4)
(1, 5)
(3, –1)***
(5, –1)
3. When converting a system of linear equations into an augmented matrix, what equation form is needed? (1 point)
slope-intercept form
negative form
graph form***
standard form
4. What does the vertical line in an augmented matrix represent? (1 point)
x-value
y-value***
equal sign
line on a graph
5. You have $1.00 in dimes and nickels. You have twice as many dimes as nickels. What would the associated system of equations look like in augmented matrix form? (1 point)
matrix 1***
matrix 2
matrix 3
matrix 4
Please help!

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  1. first four wrong, appears you are just guessing.
    on the last, isn't this the system?
    10d+5n=100
    d-2n=0
    is that a matrix 1 system?

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    bobpursley
  2. No I just realized that. I did the system wrong. I'm :/ That would be a MATRIX 3

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