USING LINEAR EQUATIONS
An electronics store has 20 CD players in stock. The manufacturer ships these players in boxes of 12.
Write a linear function that relates the number of boxes to the total number of CD players in the store.
Graph the function.
STEP 1: RELATE
What are the two things we are relating in this problem (what changes in this problem)?
1. ____________________________
2. ____________________________
Which one is the dependent variable (which one of those two things depends on the other)? ________________
STEP 2: MAKE A TABLE
Remember: y is always the dependent variable in your table!
ANSWER A QUICK QUESTION!!! Why did I start with 20 in my table???
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STEP 3: MAKE A GRAPH
Make sure you label your axis and pick a correct scale for each one!! Don’t forget to title the graph too.
STEP 4: WRITE AN EQUATION
What is slope-intercept form? ___________________________
What is the slope of your line in step 3: _________________
What is the y-intercept of your line in step 3: _____________
Write an equation for your graph in slope intercept form: __________________________
Follow-Up Questions
1. What does the y-intercept represent in the problem?
2. What does the slope represent in the problem??