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31 October, 05:27

Which relation is a function? A) y2 + 3x = 9 B) y (2x + 4y) = 8 C) x2 + 7x = 7y2 D) yx = x3 + 4x2 + 4x

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  1. 31 October, 07:13
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    The first one is a parabola opening sideways so it will not pass the vertical line test

    B not a function as it can be arranged in form x = expression in y^2 so it would be a one-to-many relation.

    D is a function because its a parabola which open upwards so it will pass the vertical line test
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