TEKS.MATH.9-12.III.C.1

Find the y-coordinate of the midpoint of the line

• 1
• 2
• -2
• 3

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TEKS.MATH.9-12.III.C.1

In the equation
(x-3)²+(y-2)²=16, the center of the circle is...

• (3,2)
• (-3, -2)
• (-2, -3)
• (2, 3)

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TEKS.MATH.9-12.III.C.1

What is the axis of symmetry for the following equation?
y=4x²-8x+9

• x=-8
• x=1
• x=-1
• x=2

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TEKS.MATH.9-12.III.C.1

What is the center and radius of the curve:
x=1+3cost
y=-2+3sint

• (-1,2) , r=3
• (-1,2) ,  r=9
• (1,-2) ,  r=3
• (1,-2) ,  r=9

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TEKS.MATH.9-12.III.C.1

What are the coordinates of the center and the radius of the circle with equation:
(x - 4)² + (y - 3)² = 25 ?

• Center (4,3)
  Radius = 5 units
• Center (4,3)
  Radius = 25 units
• Center (-4,-3)
  Radius = 25 units
• Center (-4,-3)
  Radius = 5 units

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TEKS.MATH.9-12.III.C.1

What is the center of the circle with equation x² + y² = 1?

• (1, 1)
• (0, 0)
• not enough information
• (-1, -1)

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TEKS.MATH.9-12.III.C.1

What is the equation of a parabola with vertex (3, 4) and focus (7, 4)?

• 16(x - 3) = (y - 4)²
• 28(x - 3) = (y - 4)²
• -28(x - 3) = (y - 4)²
• -16(x - 3) = (y - 4)²

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TEKS.MATH.9-12.III.C.1

Given parallelogram ABCD, labeled as shown. Find a and b.

• a = 10; b = -30

• a = 40; b = 10

• a = 10; b = 40

• a = 40; b = -10

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TEKS.MATH.9-12.III.C.1

What is the standard equation of a circle?

• (x-k)² + (y-h)² = r²

• (x+h)² + (y+k)² = r²

• (x-h)² + (y-k)² = r²

• (k-x)² + (h-y)² = r²

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TEKS.MATH.9-12.III.C.1

What is the equation of the circle?

• (x+1)² + (y +1)² = 3

• (x+1)² + (y -1)² = 3

• (x+1)² + (y +1)² = 9

• (x-1)² + (y -1)² = 9

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TEKS.MATH.9-12.III.C.1