Question

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

Answer 1

So lets convert this to an equation and find out.\[\frac{ manipulated }{ responding }=constant\]

Answer 2

If we call the manipulated variable x and the responding variable y and the constant c, it just looks like \[\frac{ x }{ y }=c\] So to make a constant what do you have to do to y if you increase x? What do you have to do to y if you decrease x to keep it constant?

Answer 3

(B)

Answer 4

Not C :)

Answer 5

Yes, B

Answer 6

Wrong on both C and B

Answer 7

sorry but i know it is (B)

Answer 8

You increase x and decrease y to keep a constant or decrease x and increase y to keep a constant. That's not directly proportional.

Answer 9

buy it is (B)

Answer 10

Lol. You really think so?

Answer 11

If one is increasing and the other is decreasing that is inversely proportional.

Answer 12

i know so thanks :)

Answer 13

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.

Answer 14

Inversely proportional would be something more like this:
\[Fg=G\frac{M_1M_2}{r^2}\]Fg is inversely (well, inverse-squared) proportional to the radius r.

Answer 15

lol Yeah I know, I was saying it backwards and confused myself. My bad!

Answer 16

It happens :)