Example – Solve the system of equations below

3

32

yx

yx

We will do this graphically on our calculator. We first need to isolate y in each equation

yy

yx

32

33

32

yx

32 xy

xx

yx

3

3 xy

So now we have our system as:

32 xy3 xy

Turn on your calculator and go to the next slide for the sequence of buttons to push and to see how to solve this system graphically on the calculator.

Enter the equations into Y1 and Y2 respectively. Your screen should look like this:

Then press the following sequence of buttons

Your screen should show this:

The point of intersection is the solution to our system.