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fredd [130]
3 years ago
6

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

Mathematics
1 answer:
mezya [45]3 years ago
8 0
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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Clair collects seashells. At home, she has 15 shells. Every day she brings 3 back to the beach. After 5 days how many seashells
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The equation would be:

y = 3x + 15

1) Table: It is pretty easy to do so, just plug in 0, 1, 2, 3, etc. for x and solve for y

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3) you already defined the variables

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