This section is to check your grasp of the lesson. Determine which equation below form an equation of a circle in general form with solution? 1. x² + y² + 2x - 6y + 1=0 2. x² + y² + 4x – 4y +8=0 3. x² + y² + 18x + 80 = 0 4. x² + y² - 4x - 10y + 33 = 0 5. x² + y² + 14x - 16y +88 = 0
