The standard form of a linear equation is ax by =
c. if b = 0 and a and c are positive, which best describes the graph of this equation? the graph is a vertical line. the graph is a horizontal line. the graph is a line with a positive slope. the graph is a line with a negative slope.

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'.