Question

Which line has a slope of 1/3?

+Line A
+Line B
+Line C
+none of the above

Answer 1

which line has a change in y of 1 (goes up by 1) when the change in x is 3 (moves to the right by 3)?

Answer 2

@phi, I think its line A.

Answer 3

pick a spot on the line that crosses nice place (at the corner of a box)
now go up 1 and to the right 3. are you on the line. If so, that is your line. otherwise,
try a different line.

Answer 4

@ph, Oh, i think i get it, it's B right?

Answer 5

yes. it is B. You should be able to figure out the slopes of the other lines

for example, line A you go down 1 (so change in y is -1) and over 3 (change in x is +3)
so A's slope is -1/3 or just - 1/3

Answer 6

@phi ok, thanks