Question

What is the constant of proportionality In the equation y= 2.5x? constant of proportionality = _______

Answer 1

the answer is 2.5 :)

Answer 2

In a direct variation, one quantity is directly proportional to the other, i.e as one quantity increases, the other increases too and vice versa;

This can be expressed mathematically as;

`y\text{ }\alpha\text{ x}`

The eliminate the sign of proportionality, we introduce a constant as shown;

`y=kx`

So if we compare the given equation y= 2.5x to the above equation, we can deduce that k, which is the constant of proportionality, is 2.5