1. Mrs. Mongold Advanced Math Topics
Break Even Point
Mrs. Mongold
Advanced Math Topics

2. Break Even Point New Vocab Lemonade Stand Expense Income

3. Solve Algebraically Find the Break Even Points E = 220 + 4.3x I = 14x

4. Solve Graphically Find the break even points by graphing
Get equations in slope intercept form
Graph both equations
Find the point of intersection
Write final answer as an ordered pair

5. Examples
E= ½ x + 6 I= 4x

6. Examples
E=2x + 10 I = x

7. Examples
E= .75x + 3 I = 3.5x

8. Graphing Lines on your calculator
y= button
Enter equation(s)
Change window to show you first quadrant
Hit the graph button
First line graphed is y1 , second graphed is y2
To find intersection go to 2nd CALC then 5

9. Homework
Solve by hand Algebraically and Graphically then use your calculator to verify your answer is correct
1. E = x E = 127+3x
I = 5x I = 25x
3. E = x E = x
I = 0.06x I = 1436x