Which relations are functions?

Select Function or Not a function for each graph.

Step-by-step explanation:

the points they give us are 12,90 , 8,60 , and 4,30

Each graph is a function except for graph number 3 , 2 and 1

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

0.32

step-by-step explanation:

2.24/7