Answer:
1,2,5,6 are functions
1, 3, 5, 6
Step-by-step explanation:
Do the vertical line test
Draw a vertical line across each x-value
No two x-values should be in the same vertical line to be a function
0.004
Since 4/10 is 0.4 and 4/100 is 0.04, 4/1000 must be 0.004
