What is the value of 4 cube root of x minus square root of y, where x equals 64 and y equals 49 ?

The cube root of 64 is 4, and 4 times that is 16. Now we have 16 minus the square root of 49. The square root of 49 is 7, so we're left with 16 minus 7. The answer is 9.

Select three of these points that will create a relation that is a direct variation.  {nl}  

A:     (2.5, 5)

B:     (6, 3)

C:     (3, 9)

D:     (2, 4)

E:     (6, 12)

yes

yes