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16 December, 12:50

Write each equation in standard form using integers. (y+3=4 (x-1), y=1/4x-2, y+2=2/3 (x+4)) Oh and btw this isn't middle school, this is high school.

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  1. 16 December, 13:05
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    Standard form: Ax + By = C where A, B, and C are integers.

    (if you don't remember, integers are numbers like ... - 2, - 1, 0, 1, 2, 3 ... etc.)

    Question 1

    y+3=4 (x-1)

    Distribute the 4.

    y+3=4x-4

    Subtract 3 from the left.

    y=4x-7

    Subtract 4x from the right.

    -4x+y=-7

    multiply everything by - 1 and make the x coefficient positive, it looks better

    4x-y=7

    y=1/4x-2

    multiply everything by 4 to get rid of fractions

    4y=x-8

    subtract x

    -x+4y=-8

    multiply by - 1

    x-4y=8

    y+2=2/3 (x+4)

    multiply by 3 to get rid of fractions

    3y+6=2 (x+4)

    distribute

    3y+6=2x+8

    subtract 6

    3y=2x+2

    subtract 2x

    -2x+3y=2

    multiply by - 1

    2x-3y=-2
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