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3 votes
Please help this is due really soon

Please help this is due really soon-example-1
User Afamee
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8.2k points

2 Answers

4 votes
well your domain is your x and the range is your y

the relation is a function if
1) x has a corresponding y
2) any one x has only one y

think about when you graph a point (x, y) if the same x has two different ys' then the graph will NOT be a function because does not pass the vertical line test. Like (2,4) and (2,-4) could be touched by a vertical line.
A. is NOT a function because x=6 has multiple y=9, y=10, y=11

B. is a function because x=4 has y=6, x=7 has y=3, x=9 has y=7!!!

C. is NOT not a function because x=5 has two y, y=6 and y=9
D. is NOTa function because x=5 has two y, y=1 and y=8


User Andrei Neagu
by
8.4k points
1 vote
b is a function because each input only has one output
User Harleen Kaur Arora
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7.3k points

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