Seudónimo Seudónimo

11-04-2015
Mathematics

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Which equations show direct variation between x and y? Choose all answers that are correct. a 3x=7 b y=4.2/x c y/x=6 d y=0.5x + 9

Respuesta :

12-04-2015

a). No. Variation in 'y' has no effect on 'x'.

b). No. Variation in 'x' has exactly the opposite effect on 'y'.

c). Yes. Variation in 'x' causes 'y' to vary 6 times as much in the same direction.

d). No. Doubling 'x' does not double 'y'.

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