## anonymous one year ago What is the relationship in which the ratio of the manipulated variable and the responding variable is constant? A. inverse proportion B. direct proportion C. slope D. interdependent

1. anonymous

A real world example - Ohm's Law: V=IR Let R be constant. V is the responding variable I is the manipulated variable. V is DIRECTLY PROPORTIONAL to I (given R is constant). As I goes up, V goes up proportionally.

2. anonymous

Inversely proportional would be something more like this: $Fg = G \frac{ M _{1}M _{1} }{ r ^{2} }$ Fg is inversely (well, inverse-squared) proportional to the radius r.

3. anonymous

So the answer would be (B) direct proportion.