Soal Lingkaran

The equation of the tangent line to the circle (x - 4)² + (y + 2)² = 5 at the point with coordinates -4 is...

• 4y + x - 12 = 0

• x + 4y + 21 = 0

• x - 5y + 19 = 0

• x - 5y + 10 = 0

• x + 5y - 10 = 0

The equation of the tangent line to the circle x² + y² - 2x - 6y - 7 = 0 at the point with abscissa 5 is...

• 4x - y - 18 = 0

• 4x - y - 4 = 0

• 4x - y + 10 = 0

• 4x + y - 4 = 0

• 4x - y - 15 = 0

The equation of the circle whose center lies on the line 2x - 4y - 4 = 0, and is tangent to the negative x-axis and negative y-axis is...

• x² + y² + 4x + 4y + 4 = 0

• x² + y² + 4x + 4y + 8 = 0

• x² + y² + 2x + 2y + 4 = 0

• x² + y² - 4x - 4y + 4 = 0

• x² + y² - 2x - 2y + 4 = 0

Persamaan lingkaran yang berpusat di (1, 4) dan bersinggungan dengan garis 3x - 4y - 2 = 0 adalah...

• x² + y² - 3x - 4y - 2 = 0

• x² + y² - 4x - 6y - 3 = 0

• x² + y² + 2x + 8y - 8 = 0

• x² + y² - 2x - 8y + 8 = 0

• x² + y² + 2x + 8y - 16 = 0

One of the equations of the tangent line to the circle x² + y² = 25 that is perpendicular to the line 2y - x + 3 = 0 is...

• y = -x

• y = x -

• y = 2x - 5

• y = -2x - 5

• y = 2x + 5

One of the equations of the tangent line from the point (0, 2) to the circle x² + y² = 1 is...

• y = x - 2

• y = x + 1

• y = -x - 2

• y = -x + 2

• y = -x + 1

The equation of the tangent line to the circle x² + y² = 100 at the point (8, -6) that is tangent to the circle with center (4, -8) and radius r. The value of r =...

• 5

• 4

• 3

• 2

• 1

The coordinates of the center of the circle x² + y² - 6x + 4y - 24 = 0 are...

• (-6, 4)

• (6, -4)

• (-3, 2)

• (3, -2)

• (4, -6)

The length of the radius of the circle x² + y² + 7x - 3y - 10 = 0 is...

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The equation of the circle that has center coordinates (4, -3) and radius 3 is...

• x² + y² + 8x - 6y + 16 = 0

• x² + y² - 8x + 6y + 16 = 0

• x² + y² + 6x - 8y + 16 = 0

• x² + y² - 6x + 8y + 16 = 0

• x² + y² - 6x - 8y + 16 = 0