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25 May, 01:48

Use algebraic rules of equations to predict the solution type to the system of equations. Include all of your work for full credit. / (f (x) = / left/{ x+y=-4 y=2x-1 / right./)

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  1. 25 May, 02:56
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    x = - 1

    y = - 3

    Step-by-step explanation:

    We have two equations:

    x + y = - 4 (1)

    y = 2 * x - 1 (2)

    What we will do is substitute (2) in (1) and we are left;

    x + 2 * x - 1 = - 4

    3 * x = - 4 + 1

    3 * x = - 3

    x = - 3/3

    x = - 1

    Now, to find out and, I replace in (2), like so:

    y = 2 * ( - 1) - 1

    y = - 2 - 1 =

    y = - 3

    Therefore, the values are:

    x = - 1

    y = - 3
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