TODAY IN ALGEBRA 2.0…

Warm Up: Solving for y

Learning Goal 1: 3.1 You will solve linear systems by graphing

Independent Practice-Assignment #1

Learning Goal 2: COE – Tour de Frank

COE: Tour de Frank-Friday

WARM UP: Identify the slope and y-intercept of the line with the given equation.1. 2. 3.

Or

Or

Graph y-intercept: Start here.

Slope = : Run is always to the right.

3.1 SOLVING LINEAR SYSTEMS BY GRAPHINGIMPORTANT VOCABULARY• SYSTEM OF LINEAR EQUATIONS: two or more linear equations

• SOLUTION OF A SYSTEM: where the graphs intersect

3.1 SOLVING LINEAR SYSTEMS BY GRAPHINGPRACTICE: Use the graph to solve the system: SOLVE FOR y to graph:(1) (2)

(2 ,2)

3.1 SOLVING LINEAR SYSTEMS BY GRAPHINGCLASSIFYING SYSTEMS:

CONSISTENTone or more solutions

INCONSISTENTno solutions

one solutionINDEPENDENT

more than 1 solution

DEPENDENT

3.1 SOLVING LINEAR SYSTEMS BY GRAPHINGPRACTICE: Use the graph to solve the system: Classify the system as consistent and independent, consistent and dependent, or inconsistent.

3.1 SOLVING LINEAR SYSTEMS BY GRAPHINGPRACTICE: Use the graph to solve the system: Classify the system as consistent and independent, consistent and dependent, or inconsistent.

3.1 SOLVING LINEAR SYSTEMS BY GRAPHINGEXAMPLE: You are going to sell ice cream. It costs you $12 to get all the equipment and $0.5 to make each cone. You will sell each cone for $2 each. How many cones do you need to sell to break even and at what cost?1. Write your equations:

2. Graph your lines and find the solution.

Sell 8 cones to break even at a cost of $16.

(8 ,16)22

IN CLASS WORK #1:

Pg. 156: 9-12, 19-23, 35-36

Due in class

COE:Tour de Frank