Interval Notation Practice
Observe the number line graph then practice defining it's set of values using Interval Notation. 1. Slide the red pinheads to select soft bracket (open circle for non-inclusive) or hard bracket [closed circle for inclusive] 2. Slide the blue and green pinheads to match the the x, y values with the number line graph. 3. Click the New Problem button each time you want to try again.