Standard Equation Quiz (5 Questions)

1. Write the equation of a circle with center (0,0) and radius 7.

2. True or False: In (x−3)² + (y+4)² = 25, radius = 25.

3. Find the center and radius: (x+5)² + (y−1)² = 36

4. True or False: (x−h)² + (y−k)² = r² is the standard circle equation.

5. Give a real-life situation modeled with a circle.

Answer Key

1. x² + y² = 49

2. False (radius = √25 = 5)

3. Center = (−5,1), radius = √36 = 6

4. True

5. Round tables, coins, circular tracks, hula hoops, wheels