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ladessa [460]
3 years ago
15

Assume varies inversely with . Find the constant of proportionality and the function.

Mathematics
1 answer:
Eddi Din [679]3 years ago
4 0

Answer:

k = 40 and y = \frac{40}{x}

k = 33 and  y = \frac{33}{x}

k = 5000 and y = \frac{5000}{x}

Step-by-step explanation:

Given

y varies inversely with x.

This is represented as:

y =\frac{k}{x}

Where k is the constant of proportionality.

(a): y = 8\ when\ x= 5

This gives:

8 =\frac{k}{5}

k = 8 * 5

k = 40 --  the constant of proportionality.

To calculate the function, substitute 40 for k in y =\frac{k}{x}

y = \frac{40}{x}

(b): y= 3\ when\ x = 11

This gives:

3 =\frac{k}{11}

k = 3 * 11

k = 33 --  the constant of proportionality.

To calculate the function, substitute 33 for k in y =\frac{k}{x}

y = \frac{33}{x}

(c): y= 50\ when\ x = 100

This gives:

50 =\frac{k}{100}

k = 50 * 100

k = 5000 --  the constant of proportionality.

To calculate the function, substitute 5000 for k in y =\frac{k}{x}

y = \frac{5000}{x}

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