Function Project

By: Taylor Lynn

Algebra 15th period

If Amanda and her 5 friends go to a High School football game, and each ticket cost $5.00 how much would her total cost be all together?

Real World Problem

Y= 5x or F(x)= 5x X= the number of friends going with Amanda.

Y= the total cost.

The Equation

My independent variable is my x value which is the number of friends going.

My dependent variable is my y value which is the total cost.

*Y depends on X * So the number of friends depends on

how much the total cost is.

Independent and Dependent

Table of Values

X 5.00x Y (x,y)

1 5.00(1) 5 (1,5)

2 5.00(2) 10 (2,10)

3 5.00(3) 15 (3,15)

4 5.00(4) 20 (4,20)

5 5.00(5) 25 (5,25)

Domain- x valueRange- y value

Domain= (1,2,3,4,5)Range= (5,10,15,20,25)

Domain and Range

My problem is continuous! My data makes a straight line.

Amanda could have as many friends as she wants to go to the game and the price would be 5 more dollars.

Continuous

A function is if all of your x values are different.

My problem is a function because all of the X’s are different.

Is it a Function?

Football Ticket Graph

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.50

5

10

15

20

25

30Y-Values

Y-Values

So, Amanda brought 5 friends with her to the football game. That’s 6 in all, so six multiplied by five would be $30.00 total.

The Real Answer