1. A,B,D
2. D
Hoped that help!
A- is a function, is cuz there are no repeats of X values.
B-is a function, There are not 2 dots when the vertical line test is done
C- is not because it has 9 as -7 and 0 and that is not a function because it repeats.
D- it is a function, cuz it passes the vertical line test
2. Its D because it does not pass the vertical line test.