Four students were scheduled to give book reports in 1 hour. after the first report, 2/3 hour remained. the next two reports took 1/6 hour and 1/4 hour. what fraction of the hour remained?

1/4

Step-by-step explanation:

4/6-1/6=1/2

2/4-1/4=1/4

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:

c

step-by-step explanation: