Question

y varies inversely as three times x. When x = 6, y = 4. Find x when y = 8.

Answer 1

y=k/3x
=>4=k/3(6)
=>k=72
=>y=72/3x
=>8=72/3x
=>x=24/8=3

Answer 2

thanx

Answer 3

3x = k/y
for x = 6, y =4

k = 3xy = 3*6*4

for y = 8

3x = 3*6*4/8 = 9

x = 9/3 = 3

x = 3