Question

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

A) y = 9x
B) y = 10x
C) y = 90x
D) y =
1
10
x

Answer 1

The Answer Is (B)

Explanation:

Answer 2

The constant of proportionality can be find as:


`(y)/(x) = k`

From the table, we can get y divided by x as:


`(90)/(9) = 10`

`(20)/(2) = 10`

`(50)/(5) = 10`

`(30)/(3) = 10`

`(70)/(7) = 10`

Then, it is obvious that:

`k = 10`

Lastly:

`y = 10x`