Rational Functions Review

A rational function is ...?

• a line that continually approaches a given curve but does not meet it at any finite distance.
• The top of a rational expression
• The bottom of a rational expression
• Made up of a ratio (fraction) of two polynomials

• y approaches infinity
• y approaches negative infinity
• y approaches 1
• y approaches 0

• None
• x = 2
• x = 3
• x = 4

Solve the equation for x.

• 6
• 5
• 7
• 4

What are the asymptotes?

• x=1, x= 2, y =1, y= 2
• x= 2, x=-2, y = 1
• x=2 y =-1
• x=1 y =2, y =-2

How do you find the x-intercept?

• replace all x-values with 0

• replace the y-value with 0 or make the numerator equal 0

• set denominator equal to 0

• compare the degrees of the numerator and denominator

How do you determine the Horizontal Asymptote?

• replace all x-values with 0

• replace the y-value with 0 or make the numerator equal 0

• set denominator equal to 0

• compare the degrees of the numerator and denominator

When finding the H.A., if the numerator degree is greater than the denominator degree, the answer is...

• y = 0

• none

• y =a / b

• What's an H.A.?

How do you know if a factor in the denominator is a hole instead of a V.A. ?

• It cancels out

• it equals 0

• you set the numerator equal to 0

• you compare the degrees

what is the equation that best matches the graph?

• A
• B
• C
• D

Tags

CCSS.HSA.APR.D.7

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7