PLZZ HELP FAST porportional relationships Study Island

1 doesn't work since the cost per item is 1.90

2 doesn't work since the cost per item is 1.58

3 doesn't work since the cost per item is 1.69

4 works since its cost is 2.73 its the closest in my opinion

please correct me if I'm wrong

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)

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: