Question

will mark brainlest
Find the constant of proportionality for the table and write in the form y = kx.

A) y = 1

15

x

B) y = 10x

C) y = 15x

D) y = 150x

Answer 1

Divide y by x:

150/10 = 15

135/9 = 15

30 /2 = 15

They all equal 15

This means the constant of proportionality would be y = 15x

The answer is C.

Answer 2

Answer:

Option C is correct

y = 15x

Step-by-step explanation:

Direct variation states that:

$y \propto x$          ......[1]

then, the equation is in the form of:

$y=kx$, where k is the constant of variation.

From the given table :

consider any points;

x = 9 and y = 135

Substitute these in [1] we have;

$135 = 9k$

Divide both sides by 9 we have;

15 = k

or

k = 15

then, the equation we have; y = 15x

Therefore,  the constant of proportionality for the table and write in the form y = kx is, y = 15x