Function Project(:By: Jalissa trotter

6th period(:

Real World Problem Jonny has to buy 220 notebooks for

his club he is in charge of. 4 notebooks come in one pack for 2.00

each. How much money does he have to get to have enough books for

everyone.

The Equation

Y=.50x or f(x)=.50xX=220

Y=The cost of one notebookX=The total number of notebooks

needed

Independent and dependent variables

The independent variable is X (the coast of one notebook)

The dependent variable is Y (the number of books needed)

The total cost of the notebooks DEPENDS on the number of

notebooks.

Is it a function?

Yes, because all of the X’s (the independent variable) are

different.

Domain & Range

Domain: is the X valuesRange: is the Y values

Domain:(1,50,100,200,220)Range:

(220,11000,22000,44000,48400)

Continuous or Discrete

Yes it is, because you can only purchase the notebooks in groups of

4

Is it a Function.?? Yes because none of my coordinates

are the same. They are all different (x)

0 5 10 15 20 25 30 35 400

2

4

6

8

10

12

14

16

Y-Values

Y-Values

….so…(: So however many notebooks Jonny

wants depends on how much he will have to pay. It would cost 2.00 dollars for 4. If he buys enough for he buys enough for his club he will spend $110.00 dollars.