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19 July, 05:38

When x increases from a to a + 2, y increases by a difference of 8. For which functions is this statement true?

A) y = 2 (4) ^x

B) y = 2 (8) ^x

C) y = 4x + 2

D) y = 8x + 2

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  1. 19 July, 05:41
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    That would be Option C.

    Step-by-step explanation:

    Lets look at y = 4x + 2:-

    Let x = a then y = 4a + 2

    Now if x in creases to a + 2, y = 4 (a + 2) + 2 = 4a + 8 + 2

    = 4a + 10.

    (4a + 10) - (4a + 2) = 8, so this is the required expression, y = 4x + 2.
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