Functions, Domain, Range and Operations of Polynomials

Identify the domain of the following relation:

• {-6, 14, 2, 28}
• {(-6,14), (0,32), (2,38), (4,44)}
• {-6, 0, 2, 4}
• {14, 32, 38, 44}

Is this mapping a function or not a function? Explain your answer 

What is a function?

• For every input, there is exactly one output.
• For every output, there is exactly one input.
• When there is a polynomial expression
• When the degree of the polynomial is even.

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.

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

What is the range?

What is the domain of the graph?

Which of the following graph is not a function. Explain your answer

What is the Range?

• y ≥ 6

• -10 ≤ y ≤ 6

• -10 ≤ x ≤ 6

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

• Right to left

• Left to right

• Bottom to top

• Top to bottom