Question

Find the constant proportionality for the ratio 2/5

Answer 1

Answer:

constant of proportionality is $\frac{2}{5}$

Step-by-step explanation:

The direct proportionality says that:

$y \propto x$

then the equation is in the form of:

$y = kx$ .......[1]

where, k is the constant of proportionality.

As per the statement:

Given the ratio 2/5

i.e,

$\frac{y}{x} = \frac{2}{5}$

then using [1] we have;

$\frac{y}{x}=k$

⇒$\frac{2}{5} = k$

or

$k= \frac{2}{5}$

Therefore, the constant of proportionality for the ratio of 2/5 is; $\frac{2}{5}$

Answer 2

The "constant of proportionality" is the value that relates the two amountsExample: you are paid $20 an hour (continued)The constant of proportionality is 20 because:Earnings = 20 × Hours worked

This can be written:  y = kx

Where k is the constant of proportionality