Question

For each of the following graphs below, write down if it is a function or not. (Function/not a Function)

Answer 1

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

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

Answer 2

no,no,no,yes

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