8. k = y/x = 36/9 = 4 15. k = y/x = 1200 / 0.6 = 20000
y = kx....y = 4x...when x = 3 y = 20000x when y 1800
y = 4(3) 1800 = 20,000x
y = 12 <== 1800/20000 = x
0.09 = x
9. k = y/x = 15/3 = 5 x = 9% <==
y = kx...y = 5x...when y = 25
25 = 5y 16. k = y/x = 0.45/5 = 0.09
5 = y <=== y = 0.09x...when x = 7
y = 0.09(7)
y = 0.63 <==
