Purebred dogs are first assigned the same litter number until they are individually registered with a name. Then the dogs will be assigned a unique registration number with a dog registry. Many people choose to have a microchip implanted in the dog so that it can be read to immediately find the dog's owner. Which of the following relations is not a function?

a. (registration number, litter number)
b. (microchip number, registration number)
c. (litter number, microchip number)
d. (microchip number, litter number)

Question

Purebred dogs are first assigned the same litter number until they are individually registered with a name. Then the dogs will be assigned a unique registration number with a dog registry. Many people choose to have a microchip implanted in the dog so that it can be read to immediately find the dog's owner.  Which of the following relations is not a function?

a. (registration number, litter number)
b. (microchip number, registration number)
c. (litter number, microchip number)
d. (microchip number, litter number)

beccaboo333 · Answer

Wish I could help :/