Consider the line 2x + 4y=5. What is the slope of a line parallel to this line?
What is the slope of a line perpendicular to this line?

slope of the line is given by

2x+4y=5

4y=-2x+5

y=(-2/4)x+5/4

y=(-1/2)x+5/4

from, y=mx+c

m=-1/2

slope of a line parallel to this line

from, m1=m2

slope, m=-1/2

slope of a line perpendicular to this line

from, m1m2=-1

(-1/2)m2=-1

m2=2

slope, m=2

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'.