Question

Consider the following model for four-point geometry.
see attachment please :)

Answer 1

parallel lines have equal slopes.
so, chekck the slopes of the lines through each option and compare with the slope of the given line.

Answer 2

slope = \(\Large {y_2-y_1\over x_2-x_1}\)

Answer 3

so for the first one the slope=1 for both y and x so thats parallel?

Answer 4

I have never seen such a representation of lines!!

Answer 5

so i checked lines 1&2 and 5&6, but it was incorrect.

Answer 6

those were the ones that had equal slopes

Answer 7

what does definition 1.8 say?