Question # 1

A line segment whose end points lie on the circle is called a __________ of the circle.

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Radius

Chord

Diameter

None of these

The graph of the parabola x² = -4ay is symmetric about:

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x-axis

major axis

y-axis

minor axis

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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

If the cutting plane is parallel to the axis of the cone and intersects both of its nappes, then the section a / an:

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Parabola

Hyperbola

Ellipse

None of these

The directrix of the parabola y² = 4ax is:

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x = a

x = -a

y = a

y = - a

The distance between the center of a circle and any point of the circle is called:

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Tangents

Secant

Diameter

Radius

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

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The parabola y² = 4ax lies in quadrants:

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I and II

III and IV

II and III

I and IV

the focal chord perpendicular to the axis of the parabola is called _____________ of the parabola:

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Directrix

Latus rectum

Focus

Focal chord

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

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Left

Upward

Right

Downward

The radius of circle x² + y² + ax + by + c = 0 is:

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None

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

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Perpendicular dropped from the center of a circle on a chord _______ the chord:

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Normal

Bisects

Equal to

None of these

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

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x = a

x = - a

y = a

y = -a

The equation of the latus-rectum of the parabola y² = 4ax is:

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x = a

x = -a

y = a

y = -a

The condition for the line y = mx + c to be a tangent to the circle x² + y² = a² is c = _____________:

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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

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

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x = X - h

x = X + h

x + X = h

None

The directrix of the parabola x² = -4ay 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

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