Can you make every number between 1 and 20 using only 4,4,4,4 and an operation? ! need this fast. 20 points will reward

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

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:

3

step-by-step explanation:

2

step-by-step explanation: