Question

What is the distance between the two points on a number line?
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

Answer 1

@TheShadyLP

Answer 2

This is a matching question?

Answer 3

Yes

Answer 4

Oh ok

Answer 5

@Directrix yes

Answer 6

X = 4, Y = –17
Use the Ruler Postulate.

The distance between two points on a number line is the absolute value of the difference of the two coordinates.

On the first problem, abs of (4 - (-17) ) = abs(4 + 17) = abs(21) = 21 -->

Answer 7

Think about it this way. From -17 moving to the right to zero is 17 units. Then there are 4 more which gives 21 for the first problem.

Answer 8

ok im trying to understand