Functions - Domain and Range

Is the set of ordered pairs
 {(2, 3), (3, 4), (3, 5), (5, 6)}
 a function?

• Yes, because the domain value 3 repeats
• No, because the domain value 3 has more than one output
• No, because there are four ordered pairs
• Yes, because it has braces.

Tags

CCSS.8.F.A.1

What are the domain elements in {(2, 3), (3, 5), (4, -6)}?

• {2, 3, 4}
• {3, 5, -6}
• {-6, 2, 3, 4, 5}

What are the range elements in the function {(3, 5), (4, 5), (6, 10)}

• {3, 4, 6}
• {5, 10}
• {3, 4, 5, 6, 10}

Why is this graph not a function?

• Because each x value has more than one y value (fails the vertical line test)
• Because it is red
• Because it has a vertex

One of these things is not like the other:

• Domain values
• X values
• Input values
• Output values

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Which is a function, the table on the left or the table on the right?

• The one on the left because the 4s match to more than one output.
• The one on the right because each input has one output.
• The one on the left because there are two threes and two twos.
• The one on the right because the x valuse are 1, 2, 3, and 7.

Tags

CCSS.8.F.A.1