What is the result of doubling one variable for two in a direct proportion?

In a direct proportion, if you double one variable, the other variable will also double. This is because both variables maintain a constant ratio to each other. For example, if variable ( x ) is doubled, leading to ( 2x ), the corresponding variable ( y ) will also change to ( 2y ) to preserve the proportional relationship. Thus, the relationship between the two variables remains consistent.