Anyone know this im stuck on it.

Answer:
A vertical line at a specific x-value of the domain will intersect the graph of a relation at each y-value in the range that
the x-value is mapped to by the relation. If even one such line has more than one intersection, then one input has two
or more outputs and the relation is not a function.
Happy to Help And brainliest please... I do this all the times sense I'm a honors student, let me know if you need help!
Step-by-step explanation: