According to AAA, the average American drives around 11,000 miles each year. Imagine someone is shopping for a new car and is debating between two versions of the Toyota Camry: standard and hybrid. If the person divides their driving evenly between city and highway, how much would they expect to spend on gas in a year with each model?

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:

do it yourself this is easy

step-by-step explanation: