Rational functions: how to find... Flashcards

1
Q

horizontal asymptote

A

degree rules

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2
Q

vertical asymptote

A

put demonimator equal to 0

what wasn’t cancled for the hole

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3
Q

hole

A

factor numerator and denominator, and cancel

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4
Q

x-inter

A

set numerator equal to 0

after hole

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5
Q

y-inter

A

replace all x’s with 0’s and solve

just put into calculator

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6
Q

end behavior

A
  • as x goes to infinity, f(x) goes to hori asyn
  • as x goes to negative infinity, f(x) goes to hori asyn
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7
Q

domain

A

all x values expect asymptotes

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8
Q

range

A

all y values expect hole and horizontal asymptote

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9
Q

standard form of a circle

A

(x-h)^2 + (y-k)^2 = r^2

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10
Q

general form of a circle

A

x^2 + y^2 + bx + cy + d = 0

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11
Q

the question: f(x) = -15x-4, f(7) is not

A

IS NOT THE DIFFRENCE QUOTIENT!!! JUST THE NUMBER

diffrence quoitent questions will have “diffrence quoitent” or formula

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12
Q

the slope for a perpendicular line is the ____ of the orignal slope

A

oppoiste reciplocal

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13
Q

horizontal aysm

if the degrees are the same…

A

y=1

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14
Q

horizontal aysm

If the degree of the demoniator is bigger

A

y=0

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15
Q

horizontal aysm

If the degree of the numerator is bigger

A

there is no hori aysm

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