Question

The tables show some input and output values:


Table A
Input Output
1 7
2 7
2 9
4 5
Table B
Input Output
6 1
7 3
8 2
9 5









Which tables represent functions?
Only A
Only B
Both A and B
Neither A nor B

Answer 1

so functions can only have 1 y value any x. so if you see a repeating x value in the table, then it's not a function

Answer 2

for* any x

Answer 3

ok so its Aonly

Answer 4

the inputs are the x values

Answer 5

so its not A?

Answer 6

do you see a repeating x value in A?

Answer 7

oh so its D

Answer 8

i believe B is a function