Solve Systems Graphically (With Calculator) Sketch the 3 possible solution scenarios of a system of linear equations. Reg Algebra 2 – Unit 2.

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Presentation transcript:

Solve Systems Graphically (With Calculator) Sketch the 3 possible solution scenarios of a system of linear equations. Reg Algebra 2 – Unit 2

Solve by Graphing Why would these not be easy to solve graphically (by hand)?

Solve Graphically (with Calculator) Rent-A-Truck charges $29.95 per day and $0.43 per mile to rent a vehicle and Borrow-My-Truck charges $45.00 per day and $0.32 per mile. For what number of miles will the rental cost be the same at both companies? Set up the system of equations.

Solve Graphically (with Calculator) Enter the equation for Rent-A-Truck into y1 and enter the equation for Borrow-My-Truck intoy2. Adjust your window setting so that you can see the intersection point on your calculator screen. Sketch you graph. Find the intersection using the following steps: o Press the 2 nd key, then the TRACE key. o You want to go to number 5 for intersect. o Next, press ENTER three times; for first curve, second curve and for the calculator to estimate the solution. o Label the intersection point on your graph.

Solve Graphically (with Calculator) What does the point of intersection represent in the truck rental situation? Which truck rental business offers the better deal?