True or False Precalculus

[danimalswim]

Two quantities are said to be directly proportional if their ratio remains constant while the quantities themselves vary.

 

[JeffM]

Two quantities are said to be directly proportional if their ratio remains constant while the quantities themselves vary.

What is the definition of "directly proportional"? Use google if need be to find the definition.

Having looked at the definition and grasped it, do you NOW think that the statement above is true, or is it false?

A lot of math is learning definitions, which means understanding them as well as memorizing them.