Domain and Range

Change the given interval in to set notation: (-∞, 5]

• {x | x > 5}

• { x | x ≥ 5}

• { x | x < 5}

• { x | x ≤ 5}

What is the domain of the graph in interval notation?

• [1,∞)

• (-∞,1]

• (-∞,∞)

• [-∞,∞]

DOMAIN is found by reading the ends of a graph from ___ to ___.

• Right to left

• Left to right

• Bottom to top

• Top to bottom

RANGE is found by reading the ends of a graph from ___ to ___.

• Right to left

• Left to right

• Bottom to top

• Top to bottom

If {x| x ≥ 6} is the domain of a function in set-builder notation, which of the following rewrites it in interval notation?

• $\left(6,\ \infty\right)$

• $\left[6,\infty\right)$

• $\left(-\infty,6\right)$

• $\left(-\infty,6\right]$

Determine the domain & range of the following graph.

• D:{-4, -2, 0, 3, 6}

  R: {-5, -1, 0 , 1, 5}

• D:(-4, 6]

  R: [0, 3)

• D:{-5, -1, 0 , 1, 5}

  R: {-4, -2, 0, 3, 6}

• D:(-4, 6)

  R: (0, 3)

Does the graph below represent a function?

• YES

• NO

Does this table represent a function?

• Yes!
• No!
• I Don't Know

Is this graph a function? (Vertical Line test)

• Yes
• No
• I Don't Know

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.