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Pearson Geometry Common Core, 2011

PG

Pearson Geometry Common Core, 2011 View details

Mid-Chapter Quiz

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Exercise 17 Page 41

The Ruler Postulate is used to find the distance between points on a segment.

3 units

Practice makes perfect

To find the length of PQ, let's consider the given number line.

According to the Ruler Postulate, the distance between two points is the absolute value of the difference between their coordinates.

PQ=|p-q|

p= -4, q= -1

PQ=| -4-( -1)|

a-(- b)=a+b

PQ=|-4+1|

Add terms

PQ= |-3|

|-3|=3

PQ=3

The length of PQ is 3 units.