Question

The unchanging value of the ratio between two proportional quantities?

Answer 1

It should be the constant of proportionality

Answer 2

The right answer is the constant of proportionality

If two variables are related and this relationship is that there is a constant ratio between them, then we are talking about proportionality. There are two types of proportionality.

1) Direct Proportionality:

In a mathematical language this is given by this equation:

`y=kx`

where
`k` is in fact this constant of proportionality. If
`x` increases,
`y` also increases at the same rate. On the other hand, If
`x` decreases,
`y` also decreases at the same rate.

2) Inverse Proportionality:

In a mathematical language this is given by this equation:

`y=(k)/(x)`

where
`k` is also called the constant of proportionality. If
`x` increases,
`y` decreases at the same rate. On the other hand, If
`x` decreases,
`y` increases at the same rate.