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27 June, 08:11

An equation 2x+y=8 has a solution (2a, 9). What is the value of a?

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  1. 27 June, 09:11
    0
    a = - 1/4

    Step-by-step explanation:

    Substitute the given solution into the equations

    2x + y = 8

    2 (2a) + (9) = 8

    4a + 9 = 8

    Rearrange to get a alone

    4a = 8 - 9

    4a = - 1

    a = - 1/4

    2a = 2 (-1/4) = - 1/2

    Solution = (-1/2, 9)
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