Finding Domain Algebraically

Algebraically, we can find the vertical asymptotes of rational functions by...

• finding what makes the denominator equal to zero.

• finding what makes the common factors cancelled out equal to zero.

Tags

CCSS.HSF-IF.C.7D

• All real numbers, except for t=2
• All real numbers, except for t=-2 & t=2
• (-∞,2)
• (2, ∞)

What is the domain?

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

When finding the domains of even root functions algebraically , we must

• only need to set the radicand equal to zero

• try as many numbers as we can

• set the radicand less than zero

• set the radicand greater than or equal to zero.

What is the Domain?

• -10 ≤ y ≤ 6

• y ≤ 6

• -10 ≤ x ≤ 6

• All Real Numbers

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Which statement is true about the graph.

• It is a function and its domain is (-4 , 5]

• It is a function and its domain is [-4 , 5)

• It is not a function and its domain is (-4 , 5]

• It is not a function and its domain is [-4 , 5)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

When finding the domains of rational functions algebraically, we must

• set the denominator greater than zero first and solve for x.

• set the denominator equal to zero first and solve for x

• set the denominator not equal to zero and solve for x.

• set the numerator equal to zero and solve for x.

When finding the domain of f(x) = log ( 2x + 1), we must

• set ( 2x + 1 ) = 0

• set ( 2x + 1 ) < 0

• set ( 2x + 1 ) > 0

• [ -12, 12 ]

• ( -12, 12 )

• ( -12, 12 ]

The domain of the function is

• [-2, 2)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5