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marissa [1.9K]
3 years ago
6

If y varies directly as x, and y is 12 when x is 1.2, what is the constant of variation for this relation?

Mathematics
2 answers:
Georgia [21]3 years ago
8 0
Hello,

y=k*x ; if x=1.2,y=12
==>12=k*1.2==>k=12/1.2==>k=10

Answer B

erik [133]3 years ago
7 0

Answer:

constant of variation is 10.

Second option is correct.

Step-by-step explanation:

We have been given that y varies directly as x. Thus, we have

y = kx.............(1)

k is the constant of variation

Now, it has been given that when y is 12 then x is 1.2.

Hence, substituting x = 1.2 and y = 12 in equation (1)

12 = 1.2 k

Divide both sides by 1.2

k = 12/1.2

k = 10

Therefore, constant of variation is 10.

Second option is correct.

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