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26 December, 12:06

Given the equation y=4x-3, if x increases by 2 unit, what is the corresponding change in y

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  1. 26 December, 14:34
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    y increases by 8

    given y = 4x - 3 then an increase in x of 2 units gives

    y = 4 (x + 2) - 3 = 4x + 8 - 3 = 4x + 5

    change in y = 4x + 5 - (4x - 3) = 4x + 5 - 4x + 3 = 8
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