Chapter 4 Functions

f: R → R, f(x) = ax + 4, f^-1(10) = 3, then x =

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Tags

CCSS.HSF-BF.B.4A

Given that f(x) = px + 3 and g(x) = qx - 4. If (g . f)(x) = 10x + 11, then q =

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Tags

CCSS.HSF-BF.A.1C

If A ⸦ B, determine whether the statement x ∉ A => x ∉ B is true or false.

• True

• False

If A ⸦ B, determine whether the statement x ∈ B => x ∈ A is true or false.

• True

• False

Is the relation a function? Why or why not?

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Tags

CCSS.8.F.A.1

Is this mapping a function?

• yes

• no

Tags

CCSS.8.F.A.1

Which function matches the graph?

• y = -1/2x + 2

• y = 1/2x + 2

• y = 2x + 2

• y = -2x + 2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

How many of these tables represent a function?

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CCSS.8.F.A.1

The function of the table is y = x + 8.

What will the y-value be when the x-value is 10?

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Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Find the rate of change for the linear function.

• decrease of 3 ft/h

• decrease of 3 h/ft

• increase of 3 ft/h

• decrease of 4 ft/h

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6