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28 August, 10:11

Let a = (-3,4) and v = (4,-5).

If a + b = v. find b.

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  1. 28 August, 13:05
    0
    b = (7, - 9)

    Step-by-step explanation:

    Let a = (-3,4) and v = (4,-5).

    If a + b = v. find b.

    performing the addition of the vectors would mean that we add corresponding coordinates.

    so

    let b = (x, y)

    then a + b = (-3, 4) + (x, y) = (-3 + x, 4+y) = v = (4, - 5)

    -3 + x = 4

    4 + y = - 5

    x = 7

    y = - 5 - 4 = - 9

    so b = (7, - 9)
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