Hi,

I was given a problem where I have to match expressions in one column with their appropriate expression in another column. I was given:

A (-3,-2), B (7, -2), and C (-1, 5)

Column 1

1. square root of (-3-4)^2 + (0+8)^2

2. |-2 -2|

3. square root of (-3+1)^2 + (-2-5)^2

4. |-5 -5|

5. square root of (7+3)^2 + (-2+2)^2

Column 2

a) Line AC

b) Line BC

c) Line BC

I was able to find the answer for a) and b), but c has me confused. I missed the class on Friday where my teacher probably explained absolute values, but from what I read it seems like the answer might be |-5-5| since |-10| = 10 and the length of line segment BC is close to that, but it's really 10.63 so I'm not sure if that's just a coincidence. Could anyone explain what the answer is for c)?

Thanks!