Question

What is the constant of proportionality? Y = -5x

Answer 1

$\huge\boxed{-5}$

The constant of proportionality can be found very easily in this example. Since $x$ and $y$ are directly proportionate, the constant of proportionality can be represented as $r$ in the following equation:

$y=rx$

Since the equation in the problem is given to us in this format, we know that $r=\boxed{-5}$.