Will Give Medal!!!

Identify the domain of the graph of y = −x^2 − 6x − 13.

All real numbers
x ≤ −4
x ≥ −6
x ≥ −2

Question

Will Give Medal!!!

Identify the domain of the graph of y = −x^2 − 6x − 13.

 All real numbers
 x ≤ −4
 x ≥ −6
 x ≥ −2

jim_thompson5910 · Answer

Rule: Any polynomial will have a domain of `all real numbers`

graphing this equation will show that it stretches in both directions (left and right) infinitely. So this visually confirms the rule above

jim_thompson5910 · Answer

the reason why the domain of any polynomial is `the set of all real numbers` is because you can plug in any value for x and get some result for y. There are no restrictions to worry about like with dividing by zero or taking the square root of a negative number

hannahwaller5 · Answer

Oh ok thanks :)