Welcome to... A Game of Xs and Os

Scoreboard X O Click Here if X Wins Click Here if O Wins

1 Suppose W varies directly as the fourth power of z and W = 27 when z = 3. Find W when z = 9

1 W = 2,187 Home

2 If y varies inversely as the cube of x, and y = 12 when x = 5. Find the value of y when x = 2

2 y = 187.5

3 If y = kx³, and x is divided by c, then y is _________

3 Divided by c³

4 The volume of a cube varies directly with the cube of its edge. If the edge length is divided in half, what effect does that have on the volume?

4 The volume is divided by 8

5 Compute the rate of change: An escalator drops 2 feet for every 7 seconds traveled

5 -2/7 feet per seconds

6 Find the rate of change: (10,5) and (20,20)

6 3/2

7 In which quadrants are the branches of y = k/x² if k > 0?

7 Quadrants I and II

8 Suppose y varies directly as x and inversely as y. Describe how y changes if x is doubled and y is tripled?

8 Y is multiplied y 2/3

9 Solve: 1/5x + 1/7x + 2 = 5

9 X = 35/4