Question

What is the constant of proportionality in the equation y=2xy=2x?

Answer 1

Answer:

2 is the constant of proportionality in the equation y = 2x .

Step-by-step explanation:

Definition of constant of proportionality

When two variables are directly proportional to each others .

Let us assume that u and v .

$u \propto v$

Than the equation becomes u= kv

Where k is called the constant of proportionality .

Thus in the question x and y are proportional variables .

i.e

$y \propto x$

y = kx

Where k is called the constant of proportionality .

Compare the equation y = kx  with  y=2x .

Thus

k = 2

Therefore 2 is the constant of proportionality in the equation y = 2x .

Answer 2

Answer:

2 is the constant of proportionality.

Step-by-step explanation:

$y=2x$

We can see the two given variables x and y are directly proportional

That is if x increases then y increases.

And if x decreases y will decrease.

We have general  equation for direct proportion which is:

$y=kx$

Where, k is the constant of proportionality.

Here, if we compare the given equation with general we have k =2

Hence, 2 is the constant of proportionality.