What kind of proportion tells that when one quantity is increasing or decreasing, the other quantity also increasing or decreasing? A. Direct Proportion B. Indirect Proportion C. Partitive Proportion

a

Step-by-step explanation:

Direct proportion is when two numbers move in the same direction. If one of the numbers increase, the other number increases and if the one of the numbers decrease, the other number decreases. The magnitude of the movement of the numbers is bounded by a constant

The expression for direct proportion is

y ∝ kx

where k is the constant

let illustrate with an example :

If x = 10

k = 4

y = 10 x4 = 40

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)