Circular basics A-B-C-D

Front

Equation of the circle: x² + y² - x + y + 1/4 = 0

Back

x² + y² - x + y + 1/4 = 0

Front

Equation of the circle: 9x² + 9y² - 6x - 12y - 4 = 0

Back

9x² + 9y² - 6x - 12y - 4 = 0

Front

Equation of the circles. Explanations required via teams!

Back

Neither of them

Front

Equation of the circles. Explanations required via teams!

Back

Both of them

Front

Equation: x² + y² + 2x - 4y - 4 = 0. Which quadrant does the center belong to?

Back

2nd

Front

Center of the equation: x² + y² + 4x + 2y + 1 = 0. Which quadrant?

Back

3rd

Front

Center of the equation: x² + y² - 2x - 4y + 4 = 0. Which quadrant?

Back

3rd

Front

Point P(4,3) on circle C with center O(2,-3) and radius 5√2?

Back

No, it does not.

Front

Points of integer coordinates P(x;y) inside the circle C: (x−1)²+(y+1)²=2?

Back

5 points

Front

Point P(+3,+4) on circle C with center O(2,-3) and radius 5√2?

Back

Yes, it does.