How do you find out whether somethings a function or not?

Step-by-step explanation:

if you can put a vertical line through it and it only touches the line once it's a function

idk

step-by-step explanation:

i don't know

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!