THE VENDING MACHINE

The above shows a Vending Machine.

Basically there is an input and an output.

It is a one to one function.

1. What are the assumptions made in designing of the vending machine.

2. If a drink cost $1.50, draw a table of values to show number of bottles against cost.

in the following format

cost ($) number of bottles

x y

3. Using a piece of graph paper, plot the graph of number of bottles again cost ($).

That is vertical axis - number of bottles

horizontal axis - cost ($)

scale : vertical axis - 2 cm - 1 unit

horizontal axis 1 cm - $1

4. Record 3 observations that you obtained from the graph.

The target audience has physical money. The people around the area need drinks. There is no other source for flavoured drinks. The target audience knows how to operate a vending machine.

ReplyDeletewith sean

Delete1. Assumptions

ReplyDelete- 1 cent and 5 cents coins will not be accepted

- Only one drink will come out after payment

- There is change if excess money is inserted

- New coins cannot be inserted

- Only coins can be inserted

- Only one drink can be bought at a time

Chester and Chelsea

1. I will only get what is in the machine, There is no negative amount of money, The customer will not use 5/1 cent coins to purchase anything from the vending machine, Only the older coins are used

ReplyDelete-Kimberly and Bg

1. They assume that people who need a drink have money with them at the moment. :)

ReplyDeletePeople will know how to use the vending machine.

DeleteThey assumed people will always have coins with them.

~Nehal & Myat Noe

If you pay for 1 drink, one drink will come out.

ReplyDeleteIf you choose a drink, that drink will come out.

If you insert insufficient amount of money, the drink would not come out.

If you insert too much money, change will come out.

Delete1. Assumptions

ReplyDelete- Strictly one drink will be discharged out of the machine after pay.

- You can only buy one drink per payment.

- Drinks at the back will automatically move up front when the drink in front is bought.

- Change is expected when paying excess money

~Sabrina & Timothy

Bryan Lee and Kenric

ReplyDelete1.The right drink comes out. The drinks cost the same. Only one bottle comes out per $1.50. There is change

2.

x 0| 1 |2 | 3 | 4 | 5 | 6 | 7 | 8 |

y 0| 1.50| $3| $4.50 | $6| $7.50| $9| $10.50 | $12 |

1.

ReplyDeleteOnly one drink is dispensed at a time

Only one drink is released after payment

If extra money is given change is released

Hong Yi and Qayyum

1: There will be no malfunctions

ReplyDelete2: 5 cents and 1 cent coins cannot be used.

3. Notes are not accepted.

4. There will be change.

5. The customer know how to use the vending machine.

Kai Cheng & Yu Hin

1.

ReplyDeleteOnly one drink is dispensed at a time

Only one drink is released after payment

If extra money is given change is released

Hong Yi and Qayyum

Eunice & Xueqin

ReplyDeleteAssumption:

- 1 drink discharged per payment

- Change will be given if there is an extra money given

- Different drinks cost different

- The coins accepted: $0.10, $0.20, $0.50, $1

- Both new and old coins are accepted

3 observations obtained from the graph:

ReplyDelete- One bottle costs $1.50

- $12 can buy 8 bottles

- The graph is a straight line

- The graph is like a staircase because the number of cans is in a discrete number.

ReplyDelete- The cost of per can of drink is the same no matter how much you buy.

- The equation is 1.5x=1y