Chapter 9.2 & 5.1-5.3 Flashcards

1
Q

What is the rule for the direction of opening of a y=a(x-h)^2+k equation?

A

It opens up if a>0

It opens down if a<0

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2
Q

What is the vertex of a y=a(x-h)^2+k equation?

A

(h,k)

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3
Q

What is the axis of symmetry for a y=a(x-h)^2 +k equation?

A

x=h

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4
Q

What is the focus of a y=a(x-h)^2+k equation?

A

(h,k+1/4a)

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5
Q

What is the directrix of a y=a(x-h)^2+k equation?

A

y=k-1/4a

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6
Q

What is the length of the Latus Kectum in a y=a(x-h)^2+k equation?

A

|1/a| units

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7
Q

What is the rule for the direction of opening in a x=a(y-k)^2+h equation?

A

Right a>0

Left a<0

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8
Q

What is the vertex for a x=a(y-k)^2+h equation?

A

(h,k)

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9
Q

What is the axis of symmetry in a x=a(y-k)^2+h equation?

A

y=k

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10
Q

What is the focus in a x=a(y-k)^2+h equation?

A

(h+1/4a, k)

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11
Q

What is the directrix in a x=a(y-k)^2+h equation?

A

x=h-1/4a

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12
Q

What is the length of the Latus Kectum in a x=a(y-k)^2+h equation?

A

|1/a| units

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13
Q

What is a polynomial?

A

An equation arhat had a positive integer (while number) exponent

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14
Q

How do you find the degree of a polynomial?

A

You add together the heights degrees of exponents

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