Conic Sections

The focus of the parabola y² = 4ax is:

1. (a, 0)
2. (0, a)
3. (-a, 0)
4. (0, -a)

The standard equation of a parabola opening towards the right is:

1. y² = 4ax
2. x² = 4ay
3. y² = -4ax
4. x² = -4ay

The eccentricity of a parabola is:

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

The general equation of a circle with centre (h, k) and radius r is:

1. (x + h)² + (y + k)² = r²
2. (x - h)² + (y - k)² = r²
3. x² + y² = r
4. x² - y² = r²

The locus of a point which moves in a plane so that its distance from a fixed point is always constant is called:

1. Parabola
2. Ellipse
3. Circle
4. Hyperbola