Functions Test

• Function
• Not a Function

Is the relation a function? Why.

• 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

Determine if the relation represents a function: {(4, 3), (3, 4), (2, 3), (1, 4)}. Why?

• Yes, because each output has exactly one input.

• Yes, because each input has exactly one output.

• No, because each output has exactly one input.

• No, because each input has exactly one output.

Determine if the relation represents a function:

• Yes, a vertical line will touch more than one point

• No, a vertical line will touch more than one point.

• Yes, a vertical line will touch only one point

• No, a vertical line will touch only one point.

Determine if the graph is a function.

• Yes, it is a function.

• No, it is not a function.

The x- coordinate is also known as which of the following? CLICK ALL that apply.

• Domain

• Range

• Independent Variable

• Dependent Variable

• Output

Determine the domain and the range of the relation.

• Domain = {3, 4, 5} Range = (-4, -2}

• Domain = {-4, -2, 3, 4, 5} Range = {3, 4, 5}

• Domain = { -4, -2} Range = {-4, -2}

• Domain = ( -4, -2} Range = (3, 4, 5}

Determine the range 𝑦 = −3𝑥² with the Domain { -2 0, 4}

• Range {36, 0, 144}

• Range { 12, 0, 48}

• Range { -12, 0, -48}

• Range { -36, -3, 144}

Which relation(s) represents a function? Click all that apply.

• 
• 
• 
• 

At which interval(s) is the function increasing?

• -4 ≤ x ≤ 3

• -4 ≤ x ≤ ∞

• 2 ≤ x ≤ ∞

• -∞ ≤ x ≤ -3