Question

Which graph represents y=⌈x⌉ over the domain −4≤x≤−1 ?
A. https://static.k12.com/nextgen_media/assets/1575892-IM2_20141114_4_Q018A.jpg

B. https://static.k12.com/nextgen_media/assets/1575893-IM2_20141114_4_Q018B.jpg

C.
https://static.k12.com/nextgen_media/assets/1575894-IM2_20141114_4_Q018C.jpg

D. https://static.k12.com/nextgen_media/assets/1575895-IM2_20141114_4_Q018D.jpg

Answer 1

One sec...

Answer 2

hm....

Answer 3

D

Answer 4

my best guess.

Answer 5

D has an open circle at -1 so we can eliminate it immediately

Answer 6

B is not defined between -4 and -3 so we can also eliminate that

Answer 7

of course I thought it said which one is wrong, my bad :(

Answer 8

⌈x⌉ implies the greatest integer greater than or equal to x

so ⌈-1⌉ would just be -1 since it's an integer itself

so which graph crosses (-1,-1)?