CHAPTER 11 / ESSENTIAL ALGEBRA 2 SKILLS 425
- If the variable y varies inversely as the square
of x, and if x> 0, then which of the following
operations will doublethe value of y?
(A) multiplying xby 2
(B) dividing xby 2
(C) multiplying xby
(D) dividing xby
(E) dividing xby 42
2
- If y= 1 when x= 8 and y= 4 when x= 2, which
of the following could express the relationship
between xand y?
I. yvaries inversely as x
II. yvaries directly as the square of x
III. yvaries directly as x
(A) none
(B) I only
(C) I and II only
(D) I and III only
(E) I, II, and III