Question

the value of y varies directly with X. Which function represents the relationship between X and Y if y equals 15/6 when x equals 20​

Answer 1

y = (1/8)x

Explanation:

The relevant basic formula is y = kx, where k is the constant of proportionality.

We must find k. To do this, let y = 15/6 and x = 20 in the above formula:

15/6 = k(20)

We solve for k by dividing both sides by 20: 15/(6*20) = k = 1/8

Then the specific formula for this situation is y = (1/8)x