what is the distance between (-2,3) and (-18,3)

Question

what is the distance between (-2.3) and (-18,3)

Answer 1

The distance between to points (x₁, y₁), (x₂, y₂) is

d = √[(x₂-x₁)²+(y₂-y₁)²

 

for (-2,3), (-18,3)

d = √[(-18-(-2))²+(3-3)²]

= √[(-18+2)²]

= √(-16)²

d = 16

 

You could also solve this problem without using the

distance formula.  Since the y coordinates are the

same, 3, the distance is merely straight line from

the x coordinates from -2 to -18

Taken as absolute value since distance is considered

to be positive:  |-18-(-2)| = |-16| = 16