It is also called as the constant of proportionality. It is also called as the constant of proportionality. *

constant of variation

Step-by-step explanation:

Constant of variation and constant of proportionality mean the same and they are used in variations.

For instance:

In the above equation, y varies directly as x and the constant of proportionality or variation is 2.

It is often represented with k (though, other alphabets can also be used)

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.

a 270° rotation about point p says on e d g e n u it y (had to space it out because it says it's a misspelling so i couldn't submit it