1. Warm up
Benito is a waiter. He earns a base salary of $1,500 a month, plus 20% of the price of the meals he serves.
Write an equation to predict the amount of money Benito will earn if he serves $350 in meals.
Benito earned $1,650 in one month. What was the total price of the meals that Benito served?
Create a graph to show the possible amount of money Benito could earn each month.

2. Warm up - debrief
Benito is a waiter. He earns a base salary of $1,500 a month, plus 20% of the price of the meals he serves.
Write an equation to predict the amount of money Benito will earn if he serves $350 in meals. y= x
Benito earned $1,650 in one month. What was the total price of the meals that Benito served?
Substitute $1,650 for y, the total amount of money Benito earned.
1650 = x Solve for x.
1650 = x 150 = 0.20x 750 = x
Original equation Subtract 1,500 from both sides. Divide both sides by 0.20.
Benito served $750 worth of meals.
Create a graph to show the possible amount of money Benito could earn each month.

3. Warm up- debrief
Benito is a waiter. He earns a base salary of $1,500 a month, plus 20% of the price of the meals he serves.
Write an equation to predict the amount of money Benito will earn if he serves $350 in meals. y= x
Benito earned $1,650 in one month. What was the total price of the meals that Benito served?
1650 = x 150 = 0.20x 750 = x
1650 = x Solve for x.
Substitute $1,650 for y, the total amount of money Benito earned.
Original equation Subtract 1,500 from both sides. Divide both sides by 0.20.
Benito served $750 worth of meals.
Create a graph to show the possible amount of money Benito could earn each month.

4. Standard
A–REI.6  Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables.

5. Learning Target
There are various methods for solving a system of equations. One is the graphing method.
I can use a TI-84 to graph system of equations.

6. Graphing Equations Using a TI-84
1. Enter the first equation into Y1. 2.  Enter the second equation into Y2. 3.  Hit GRAPH.
4.  Use the INTERSECT option to find where the two graphs intersect (the answer).      2nd TRACE (CALC) #5 intersect      Move spider close to the intersection.      Hit ENTER 3 times.

9. Practice 2.3.3: Solving Systems of Linear Equations by Graphing
Page # 36, do 1-4, 6, and 8