Determine whether the formula describes y as a function of x. Explain your reasoning. y = -x

answer: i think it is (1,-2)

b). 4320 have a nice day

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.