4. Speed = 9,000 mph; Time= 4.5 hours; Distance= ?

distance = 65178.4km/hr

Step-by-step explanation:

given that speed = 9000mph

time = 4.5hours

distance =

recall,

speed = distance / time

distance =  speed x time

distance = 9000 x 4.5

distance = 40,500

distance converted to kilometer per hour

distance = 65178.4km/hr

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: