check my answers please asap

(1 pt)
What is the distance between the two points on a number line?
Column A Column B
1.
X = 4, Y = –17
2.
P = 23, Q = 8
3.
U = –1, V = –14
4.
J = –3, K = 18
A.
13
B.
15
C.
21
@JoannaBlackwelder @phi @welshfella

Question

check my answers please asap

(1 pt)	
What is the distance between the two points on a number line?
Column A		Column B
1.
X = 4, Y = –17
 2.
P = 23, Q = 8
 3.
U = –1, V = –14
 4.
J = –3, K = 18
A.
13
B.
15
C.
21
@JoannaBlackwelder @phi @welshfella

phi · Answer

the distance between
X = 4, Y = –17
is 21

say you put your finger at -17 and start counting until you get to 0.  You will have to move 17 steps.  then you need to go *another* 4 steps to get to +4
17+4= 21

you could also figure this out  by subtraction:  big number minus small number
in this case:   
4 - (-17)
two minuses make a plus (may not make sense, but that is how it works) so
4 + 17
and that is 21