Question

help please work attached

Answer 1

direct variation means, something varies proportionally to something else
as this varies, that will vary at some proportion

so if the atmospheric pressure in water increases by 4.3lbs for every square inch
that means that 4.3lbs is your proportion, or your ratio, thus

y = 4.3x

if x = varies to 2, y varies to 4.3(2) = 8.6
if x = varies to 7, y varies to 4.3(7) = 30.1
and so on

Answer 2

ok

Answer 3

umm i just got super confused when i put it in

Answer 4

pleaseeeee helppppppppppppppppppppppppp

Answer 5

Well you need to figure out the general formula...

Direct Vairation: Pressure varies with depth...so

\[\large P = kd\]

You have a 'P' and you have a 'd' ....you need to solve for 'k'

\[\large 4.3 = k(10)\]

\[\large k = ?\]

After you solve for 'k'....you write your equation that you know can use to solve any depth...

\[\large y = (\text{Enter 'k' here})x\]

Answer 6

so i do 4.3*10

Answer 7

or 4.3/10

Answer 8

Right Divided...because you need to solve for 'k'...so what is 4.3/10?

Answer 9

ok so k=.43

Answer 10

Right...so your equation that you would want would be...

\[\large P = 0.43d\]

where 'P' is pressure and 'd' is depth

Answer 11

so my answer is p=0.43d

Answer 12

Well yeah...because the picture shows...at 10 depth units...the pressure = 4.3 psi...so .43 * 10 DOES = 4.3.....so yes your answer would be that :)

Answer 13

ok can u help with a few more and thanks

Answer 14

I actually have to go for a little bit...if you still need help a little later on and you see I'm on again....feel free to message me if you want :)