Find an equation of a line, given: a) Passes through A(2,6) and B(4,12). b) Passes through the origin (0,0) and has a

Question

Find an equation of a line, given:

a) Passes through A(2,6) and B(4,12).

b) Passes through the origin (0,0) and has a slope of -2

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Aubrey 4 days 2021-10-10T02:51:27+00:00 1 Answer 0

Answers ( )

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    2021-10-10T02:52:44+00:00

    Answer:

    a.)  y = 3x    b.) y = -2x

    Step-by-step explanation:

    a) Passes through A(2,6) and B(4,12).

    slope =  (12 – 6)/ (4 – 2) = 6/2 = 3

    y – 6 = 3 * (x – 2)

    y = 3x – 6 + 6 ,  

    y = 3x

    ————————

    b.)  Passes through the origin (0,0) and has a slope of -2

    use   y = mx +b

    m = -2,  b =0

    y = -2x

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