What is the constant of proportionality in the equation y=\dfrac54xy= 4 5 xy, equals, start fraction, 5, divided by, 4, end fraction, x?

Step-by-step explanation:

We have been given an equation and we are asked to find the constant of proportionality in the given equation.

If two variables are proportional, there is always a constant ratio between them. This constant is called the constant of proportionality.    

Since we know that a directly proportional equation in in form: , where k is constant of proportionality.

Upon comparing our given equation with the directly proportional equation we can see that , therefore, constant of proportionality in our given equation is .

When 'y' is directly proportional to 'x' then according to the given expression the proportionality constant will be 5/4 and this can be determined by using the definition of proportionality constant.

Given :

Equation -

When two variables are proportional to each other, then their ratio will be equal to a constant, then that constant is known as the proportionality constant.

So, in the given expression y is directly proportional to x then their ratio is equal to a constant which is given by:

Therefore, when 'y' is directly proportional to 'x' then according to the given expression the proportionality constant will be 5/4.

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answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed