If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
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y = kx

Step-by-step explanation:

If y varies directly as x

That means y = kx

Where k is the constant of proportionality

If y = 18 and

x = 5

K= ?

Using y = kx

18 = k x 5

Divide both sides by 5

18/5 = k x 5 /5

3 3/5 = k

K = 3 3/5

Now , when x = 11

The expression to find y is

y = kx

Since k = 3 3/5 and

x = 11

y = 3 3/5 x 11

y = 18/5 x 11

Multiply through

y = 198/5

y = 39 3/5

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !