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2 April, 10:53

How would u solve this liner system?

y = - 3x - 1

4x + 3y = 2

What is x and what is y?

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Answers (1)
  1. 2 April, 11:07
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    We can solve it by substitution: y = - 3 x - 1.

    So the 2nd equation becomes:

    4 x + 3 * ( - 3 x - 1) = 2

    4 x - 9 x - 3 = 2

    - 5 x = 2 + 3

    - 5 x = 5

    x = 5 : ( - 5) = - 1

    y = - 3 * ( - 1) - 1 = 3 - 1 = 2

    Answer: x = - 1, y = 2.
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