Move Point X. What do you notice?
Prediction
If X is -5, what is Y?
If X is 2.3, what is Y?
If X is 237, what is Y?
Verbal Description
Describe how you can find Y if you know what X is.
Describe what you notice about the sketch that the point (x, y) makes when you turn on the trace.
Look for Number Patterns
Make a table for X and Y and include at least five different pairs for A and B. What do you notice?
Rule
Write a rule for finding Y if you know X. Your rule should begin with "Y = ..."