Respuesta :

Answer:

no,no,no,yes

Step-by-step explanation:

If it is a function it can never over lap.  Take a piece of paper and try to move it across the line and if it ever overlaps it is not a function

Answer: 1,2,3 not functions, 4 is

Step-by-step explanation:

Use the vertical line test... can you draw a vertical line through the graph and only hit 1 point- if so, it is a function- if no it isn't

Graphs 1, and 2 both have places where I would hit two points- so no

graph 3 is a vertical line- so it isn't a function either

graph 4 passes the vertical line test so it is

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