Question

verify

Answer 1

?

Answer 2

@ganeshie8

Answer 3

@EducateMe

Answer 4

means
y proportion to x
and
y proportaion to 1/z^2

Answer 5

y=kx
k=proportionality constant

Answer 6

y=30 when x=20
gives us
30=K*20
k=3/2

Answer 7

y=3x/2

Answer 8

when x=64
y=3*64/2=3*32=96

Answer 9

now y=p/z^2
p=proportionality constant
at y=30 and z=2
gives us
30=P/2^2=P/4
p=30*4=120

Answer 10

y=120/z^2
at z=4
y=120/4^2
y=120/16=15/2