The equation of the line passing through the points (−1, 2) and (4, 0) is given by ax + by = 16. What is the value of b?

Question

The equation of the line passing through the points (−1, 2) and (4, 0) is given by ax + by = 16. What is the value of b?

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Philomena 4 days 2021-07-19T05:57:06+00:00 1 Answers 0 views 0

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    2021-07-19T05:58:06+00:00

    Answer:

    8/5

    Step-by-step explanation:

    Slope of the line = (-1-4)/(2-0)= -5/2

    Equation of the line :

    => y – y1 = m(x – x1)

    => y – 0 = (-5/2)(x – 4)

    => 2(y – 0) = – 5x + 20

    => 2y + 5x = 20

    To make the RHS 16, divide both sides by 20 and multiply by 16:

    => (2y/20)*16 + (5x/20)*16 = (20/20)*16

    => 8y/5 + 4x = 16

    compare the equation with ax + by = 16 for y, b = 8/5

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