Aresearcher believes that eating all organic foods will improve blood pressure. so, the researcher studies groups as their diet is altered. describe the independent variable (treatment variable) and the dependent variable (the variable of interest). make sure you answer all questions and write in complete sentences.

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

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:

correct answer is c. just did it

step-by-step explanation: