Question

It is given that y is directly proportional tox.

What is the constant of variation?
y
1
-4
2
-8
3
- 12
4
-16
5
-20
intro
Done

Answer 1

k = - 4

Explanation:

The equation that represents direct proportion is

y = kx ← k is the constant of proportion

To find k use any ordered pair from the table.

Using (2, - 8 ) , then

- 8 = 2k ( divide both sides by 2 )

k = - 4