Question

What is the constant of proportionality in the equation y=\dfrac{5}{9}xy= 9
5
​ xy, equals, start fraction, 5, divided by, 9, end fraction, x?
constant of proportionality ==equals

Answer 1

We have been given an equation y=\frac{5}{4}xy=

4

5

x 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: y=kxy=kx , where k is constant of proportionality.

Upon comparing our given equation with the directly proportional equation we can see that k=\frac{5}{4}k=

4

5

, therefore, constant of proportionality in our given equation is \frac{5}{4}

4

5

.