Is the relation a function? y = x2 + 12x + 31

Yes , is a function.

Step-by-step explanation:

The given relation :

where , and it a polynomial function .

Also, when we draw the graph of the given function  [see the attachment ], we can see that each value of x corresponds to exactly one unique y-value.

It means it follows the definition of a function.

Thus , the answer is : Yes , is a function.

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .