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ANEK [815]
3 years ago
15

If y varies directly as x and k=8 , find x when y =8

Mathematics
2 answers:
Tju [1.3M]3 years ago
8 0

Answer:

x = 1

Step-by-step explanation:

Given that y varies directly as x then the equation relating them is

y = kx ← k is the constant of variation

here k = 8, thus

y = 8x ← equation of variation

When y = 8, then

8x = 8 ( divide both sides by 8 )

x = 1

mixas84 [53]3 years ago
8 0

For this case we have that the variables x and y vary directly according to the following constant of proportionality.

k = 8

Then, the equation would be:

y= kx

Substituting the value of y, we have the value of x

\frac{8}{8}=x\\x=1

Thus, x =1\ when\ y = 8, according to the given proportionality constant.

Answer:

x = 1

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