Check whether (0, -2) is solution of the equation x – 2y = 4 or not.

Question

Check whether (0, -2) is solution of the equation x – 2y = 4 or not.

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Gerda 5 years 2021-08-15T18:29:42+00:00 1 Answers 30 views 0

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  1. Sigrid
    0
    2021-08-15T18:30:46+00:00
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    Answer: Yes, it is a solution

    ===================================================

    Explanation:

    Any ordered pair, aka point, is of the form (x,y)

    x is always listed first

    The point (0,-2) means x = 0 and y = -2 pair up together

    Let’s plug them into the equation and simplify everything

    x-2y = 4

    0-2(-2) = 4

    0+4 = 4

    4 = 4

    We end up with a true statement since we get the same thing on both sides, therefore the original equation is true for (x,y) = (0,-2)

    (0,-2) is a solution to the given equation

    Phrased another way: the point (0,-2) is on the line x-2y = 4. This point is the y intercept.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )