Question # 1

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

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Directrix

Vertex

Focus

Eccentricity

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a

2b

b

2a

The directrix of the parabola y² = 4ax is:

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x = a

x = -a

y = a

y = - a

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Free vector

Unit vector

Null vector

None of these

Distance of the point (-3, 7) from x-axis is:

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3

-3

7

10

A region, which is restricted to the ________ quadrant, is referred to as a feasible region for the set of given contraints.

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First

Third

Second

Fourth

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0

1

2

4

f(x) is odd function. If and only if:

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f(-x) = -f(x)

f(-x) = f(x)

f(x) = 3f(-x)

f(x) = -3f(-x)

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

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4, -4

0

2, -2

0, 4

The two parts of a right circular cones are called:

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Nappes

Apex of the cone

Generator

Vertex

The graph of the parabola y² = -4ax lies in quadrants:

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I and II

III and IV

II and III

I and III

If (x, y) are the coordinates of a point, then the first component of the ordered pair is called:

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Abscissa

Ordinate

Coordinate axes

None of these

The vertex of the parabola y² = -4ax is:

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(-a, 0)

(a, 0)

(0, -a)

(0, 0)

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Parallel lines

Perpendicular lines

Non-parallel lines

None of these

One of the angles of a triangle inscribed in a circle is of 40°. If one of its' the diameter, the other angles have the measures:

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30°, 110°

40°, 100°

50°, 90°

20°, 120°

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Line parallel to x-axis

Line parallel to y-axis

Line passing through the origin

Both (a) and (b)

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

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x = a

x = - a

y = a

y = -a

General form of equation of line is:

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ax - by + c = 0

ax + by - c = 0

ax + by + c = 0

ax - by - c = 0

The axis of the parabola x² = 4ay is:

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x = 0

x = -a

y = 0

y = -a

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