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
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OpenStudy (anonymous):
Let's take 7 , 12 as our first example. We're trying to find out the difference between the two...take 12 minus 7 and you get a difference of 5 between them.
Now the first problem, 4, -17...put the larger one first and subtract the smaller one. 4 minus negative 17 is the same as 4 plus 17 which is 21.
23-8 is 15, of course.
-1-14 is -15, but the difference between something can't be negative, so it's just 15.
18-(-3) = 18+3 = 21.