We call the ratio between two directly proportional quantities the constant of proportionality. When two quantities are directly proportional, they increase and decrease at the same rate. While these two quantities may increase or decrease, the constant of proportionality always remains the same.
18w (please check for sure though, cause im not 100% )
9 million and 9 hundred thousand
9,000,000
and 900,000
Step-by-step explanation:
