Question # 1

Two arcs of two different circles are congruent if:

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The circles are congruent

The corresponding central angles are congruent

Both a and b

None of the above

If the equation of the parabola is x² = 4ay, then opening of the parabola is to _______ of the x-axis:

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Left

Upward

Right

Downward

If the cutting plane is slightly tillted and cuts only one nappe of the cone, then the section is a / an:

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Ellipse

Circular cone

Circle

Point circle

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Circle

Parabola

Hyperbola

Ellipse

If the equation of the parabola is y² = - 4ax, then opening of the parabola is to the ______ of the y-axis:

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Left

Upward

Right

Downward

Equation of axis of the parabola x² = 4ay is:

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x = 0

x = a

y = 0

y = a

If the focus lies on the x-axis with coordinates F(a, 0) and directrix of the parabola is = - a then the equation of parabola is:

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x² = 4ay

y²= 4ax

-x²= 4ay

-y²= 4ax

The opening of the parabola x² = 4ay is upward of the:

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x -axis

y = c

y - axis

x = y

In the case of rotation of axes which formula is true:

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The equ. of directrix of the parabola y² = -4ax is:

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x = a

x = - a

y = a

y = -a

The radius of point circle is:

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0

(0, 0)

r

1

The point of a parabola which is closest to the focus in the:

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Directrix

Vertex

Focus

Chord

The radius of circle x² + y² + 2gx + 2fy + c = 0 is:

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The point where the axis meets the parabola is called ________ of the parabola:

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Directrix

Vertex

Focus

Eccentricity

The opening of the parabola x²= 16y is to __________ of the x-axis:

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Left

Upward

Right

Downward

If r is the radius of the circle and its center is at origin, then equation of circle is:

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x² + y² = a²

x² + y² = r²

x² - y² = a²

x² - y² = r²

The directrix of the parabola x² = -4ay is:

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x = a

x = -a

y = a

y = -a

The graph of the parabola y²= -4ax is symmetric about:

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x-axis

y = x

y-axis

None of these

The vertex of the parabola x² = 4ay is:

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(-a, 0)

(0, a)

(0, -a)

(0, 0)

y² = 4ax, is the standard equation of the:

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Ellipse

Parabola

Hyperbola

None of these

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