Which equation represents a line that is parallel to the x-axis, is perpendicular to the y-axis, and has a slope of 0? A.

B.

C.

D.

C

Step-by-step explanation:

The equation of a line parallel to the x- axis ( slope of 0 ) and perpendicular to the y- axis has equation

y = c

where c is the value of the y- coordinates the line passes through.

The only equation in this form is

y = → C

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

the answer is 31.27mph