# Graphing Linear Equations in 2 Unknowns

- Author:
- Xavi, Anthony OR 柯志明

- Topic:
- Equations, Function Graph, Linear Equations

- In the table, enter at least 4 pairs of values of
*x*and*y*(with some of them being negatives or decimals) satisfying the relation*y*=*x*+ 2. - Select these values, right-click and choose “Create List of Points” to plot them on the rectangular coordinate plane. What do you observe?
- Check the box “Mark positions satisfying the relation”. Drag A to see the positions of A (in red) at which its coordinates satisfy the equation. What do we can if we plot ALL the pair of values satisfying the equation in the graph?

Anthony Or. Education Bureau, Hong Kong.