Question

Name the constant of proportionality for the equation below: y = -2/3 x

Answer 1

Answer:

$-\dfrac{2}{3}$

Step-by-step explanation:

When variable y is said to be proportional to another variable x, it is written as:

$y \propto x$

To introduce the equality sign, we introduce what is called the constant of proportionality, say k and write the above as:

y=kx

Comparing the given equation:

$y=-\frac{2}{3}x$

We can see that our constant of proportionality:

$k=-\dfrac{2}{3}$