Conic sections

The equation x2 + y2 = 25 represents a circle of radius:

• 1 50
• 2 25
• 3 12.5
• 4 5

The focus of the parabola y2 = 4x is at:

• 1 (2, 0)
• 2 (1, 0)
• 3 (4, 0)
• 4 (0, 1)

The eccentricity of a parabola is:

• 1 Greater than 1
• 2 0
• 3 1
• 4 Less than 1

The centre of the circle (x - 2)2 + (y + 3)2 = 16 is:

• 1 (-2, -3)
• 2 (2, -3)
• 3 (-2, 3)
• 4 (2, 3)

The eccentricity of an ellipse is:

• 1 Less than 1
• 2 Equal to 1
• 3 Greater than 1
• 4 Zero always