Question

A 20,000 gallon swimming pool contains 5000 gallons of water when a hose is placed in the pool and begins adding water at a rate of 1250 gallons per hour.

Answer 1

Razor any idea ? you need creat a function with variable x what f(x) will start from 5000

do you understand me ?

Answer 2

No I don't understand any of it I missed the class for this lesson....

Answer 3

you know that f(0) = 5000 gallon and after every hours the pool get 1250 gallon water so after the first hour the pool contain 5000 +1250 gallon water = 6250 gallon after second hour the pool contain 6250+1250 = 7500 gallon water

do you understand me ?

Answer 4

ohhhh....so I just keep adding 1250 because its like ...per hour?

Answer 5

@ThisGirlPretty


yes exactly

Answer 6

and using this you ned make a diagramm

Answer 7

need

Answer 8

it's ok now ?

Answer 9

erm....do we use rise and run?

Answer 10

@ThisGirlPretty can you please help in explain it ?

Answer 11

lolz.....sorry dewd

Answer 12

the diagramm start from point f(0) = 5000 so y = 5000 after 1 hour so x=1 the y=5000+1250 = 6250 and so much continue

Answer 13

when x=2 so y = 7500

Answer 14

..............................................................maybe I should use khan academy o-o or wait for dude o-o

Answer 15

why ? just us what i ve wrote above and drawn the diagramm till the pool will be full arive at 20000 gallon of water

Answer 16

@ThisGirlPretty please can you explaining more understandably ?

Answer 17

one sec I'm gonna see if I can do it and show you

Answer 18

Razor this diagramm is very very easy just us what i ve wrote above

Answer 19

I'm more of a visual learner. Sorry. Um is this right?

Answer 20

Or do you mean diagram like a shape

Answer 21

no just a line a curve

Answer 22

ohhh

Answer 23

Yeah I'm still cofused and my line is all over the place

Answer 24

I def didn't do it right

Answer 25

Oh, its not exponential, its linear

Answer 26

o-o ...but howz I dew dis

Answer 27

So jhonny said that when x is 0, the y is 5,000

So 5,000 is your starting points

Answer 28

exactly dude - thank you thet help in explaination

Answer 29

ohhhhh

Answer 30

okie okie

Answer 31

`1250 gallons per hour.`

This is your rate (rise/run)

per is like saying over (a fraction)

So,
1250 \(\color{red}{per}\) hour =>\(\frac{1250}{hour}=>\frac{1250}{1}\)

Answer 32

..... I'm guessing I'm going to stop my line at 4 hours... and then continue going up from there?

Answer 33

Add 1250 each time to get your next point

That is a rough estimate, I only plotted the first hour

Answer 34

Starting = 5,000
Point 1 = 5,000+1250 = 6250
Point 2 = 6250 + 1250 = 7500
and so on...

Answer 35

oh so I literally start ON the line..

Answer 36

Yes

Answer 37

Like that and then so on?

Answer 38

to to the next point, just add 1250

Answer 39

When re-check your point

Answer 40

Unless you are actually at 6250

Answer 41

It won't let me go inbetween the numbers lol is this right?

Answer 42

Oh, hmm can you plot points on 3 different locations? Or does it have to be every x value has a point?

Answer 43

Like this you mean?

Answer 44

No no, I mean like only have a point for example when x is 2

Answer 45

ohhh no it doesn't let me do that

Answer 46

Welp, I guess the way you were doing it is right though it isn't technically right

Every point is supposed to go up by 1250, not 1000

Answer 47

lolz ... okie I can't make it go that little or far though

Answer 48

You're only supposed to go up to when y is 20,000, since that is the capacity of the gallon

Answer 49

Up to 20,000

Also its a straight line, there are no jumps

Answer 50

Ah I got it

Answer 51

Oh wait you can play specific points

Answer 52

??

Answer 53

You want to post these main ones

Answer 54

Oh it only goes up by 10,000

Only plot
(4, 10000)
and
(12, 20000)

Answer 55

ah okie XD

Answer 56

Yes

Answer 57

errrrr points all look wonky

Answer 58

How so?

Answer 59

You don't need the other line

The points in your answer should only be
(0, 5000)
(4, 10000)
(12, 20000)

Answer 60

Took way longer than I thought

Answer 61

Perf

Answer 62

Yes sorry

Answer 63

XD iz fine my fault

Answer 64

D:

Well that is your graph

Answer 65

okiez.. do yew think yew could stay on for more math questions?

Answer 66

Sure

Answer 67

okie thanks