y =kx

k =16/2 =8

y = 8x

when x= 6 y =48

B.

y =k/x

30* 4 = k

y =120/x

when x=10 y =120/10 =12

y = kxz

k = 40/(5*2) =4

y =4xz

when x=8 z= 5 y = 4*8*5 = 160

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