# If I varies inversely with R and I = 0.15 when R = 50, which equation should be used to show this relationship?

Jun 21, 2015

#### Answer:

color(blue)(IR) =color(red)(7.5

#### Explanation:

Here color(blue)( R and I are the variables and let $\textcolor{red}{k}$ be the constant

Given:
$\textcolor{b l u e}{I} = 0.15$
$\textcolor{b l u e}{R} = 50$

Inverse variations are denoted as:
color(blue)(I xx R) = color(red)(k

So,
$0.15 \times 50 = k$
The constant, color(blue)( k = 7.5

The variation can thus be represented as:

color(blue)(IR) =color(red)(7.5