Graphing Linear Equations in 2 Unknowns

  1. 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.
  2. Select these values, right-click and choose
    “Create List of Points” to plot them on the rectangular
    coordinate plane. What do you observe?
  3. 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 pairs of values satisfying the equation in the graph?

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