The value of y varies directly with the value of x, and y = 12 when x = 4.

Which equations represent the relationship between y and x?

Choose exactly two answers that are correct.
A. y/x=3

B. xy=3

C. x=3y

D. y=3x

Question

03-03-2015
Mathematics

Answered

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The value of y varies directly with the value of x, and y = 12 when x = 4.

Which equations represent the relationship between y and x?

Choose exactly two answers that are correct.
A. y/x=3

B. xy=3

C. x=3y

D. y=3x

Sagot :

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nicolelle nicolelle · Answer 1 · 2015-03-03T15:31:53-05:00

nicolelle nicolelle

03-03-2015

You can basically plug in the numbers for x and y into the options:

A. y/x = 3
12/4 = 3, so this one is right

B. xy = 3
12*4 = 48, so this is wrong

C. x = 3y
3*12 = 36, which is not x (4), so this is wrong

D. y = 3x
3*4 = 12, which is y (12), so this is right

So, A and D are right

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