Question

If the coordinates of the points D, E, F, G, and H are -3, -6, 8, 15 and 13, respectively, which segment is the longest?

DE

EG

FG<--my answer

FH

Answer 1

is my answer correct?

Answer 2

Are these coordinates on a number line? As opposed to say, the x-y plane?

Answer 3

no

Answer 4

They don't look like ordered pairs to me.

So, I'm thinking about distance on a number line and the Ruler Postulate.