I need to describe the type of mapping in each direction. To determine in which direction (if any) is a function. And if it is a function, to state the domain. Please help this is mapping and functions. I need your help urgently. Thank you.

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

d is the answer

step-by-step explanation:

a.)the line for function b is steeper

the height of the surface increases from the center out to the sides of the road

it is c!