7) 5,16, 15,11,3,7,5,20
18) 3,9,13,6,13,14,13
9) 2,12,19,13,10,10
10) 4,16,19,3.2
18.
11) 11,20,3,16,6,6
12) 4,8,17,16,20,7,16,7,19
13) 20,1,7,19,11, 19
14) 14,6,4,20,7,16,11,11,2
15) 16,19,5,17,20,6
what is the median of the data above

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:

thats not a system of equations, that is a solution