Question

What relationship exists between two variables when their ratio is a constant? a negative slope a direct proportion an inverse proportion

Answer 1

Direct proportion

Hope this helps (:

Answer 2

Answer:

a direct proportion

Explanation:

Boyle’s law is an example of direct proportion

PV = K, at constant temperature

where P is pressure, V is volume and K is a proportionality constant.  

According to Boyle’s law the two variables pressure and volume are directly proportional to each other. When pressure increases volume increases and vice-versa.