(PLEASE ANSWER SHOW WORK THANK YOU! 2 QUESTIONS ANSWER ANYONE OF THEM OR BOTH) What is the length of a vertical line segment joining ordered pairs (4,3) and (4,12)? Answer choices:

A. 7 units
B. 9 units
C. 15 units
D. 16 units


2nd question;
Mary wants to find the horizontal distance between coordinate points (9,4) and (3,4) what can be so to find that distance?

A. Add the x-coordinates
B. Add the y-coordinates
C. Subtract the x-coordinates
D. Subtract the y-coordinates