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2 years ago

y is directly proportional to the square root of x, y is 75 and x is 100. find a formula linking x and y

Mathematics

1 answer:

Law Incorporation [45]2 years ago

3 0

Answer:

y = 7.5 $\sqrt{x}$

Step-by-step explanation:

given y is directly proportional to $\sqrt{x}$ then the equation relating them is

y = k $\sqrt{x}$ ← k is the constant of proportion

to find k use the condition y = 75 , x = 100 , then

75 = k $\sqrt{100}$ = 10k ( divide both sides by 10 )

7.5 = k

y = 7.5 $\sqrt{x}$ ← equation of proportion

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Answer:

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Answer:

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Step-by-step explanation:

The question below is

Will the towns tax status change within the next 3 years ?

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t ----> the number of years

we have a exponential function of the form

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substitute

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Multiply by -1 both sides

$0.067t > 0.1950$

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