Question

A relation is a function if _____.

there is exactly one input for each output
there is exactly one output for each input
there is more than one input for each output
there is more than one output for each input

Answer 1

A

Answer 2

there is exactly one input for each output

Answer 3

thx

Answer 4

:)

Answer 5

one output for a given input

Answer 6

can do a vertical line test .
for any given x value the input , draw the vertical line from that point. if the graph intersects the line more than once then not a function