The following measurements were taken of a tree. do the age and height show direct variation? if so, write the equation of variation. direct variation y = 0.28x direct variation y = 0.28x + 3.6 direct variation x = 3.6y no direct variation

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

hi, i am not sure about this one but i think its d,

hope this !