Question

What are the domains of the following graphs?
http://gyazo.com/cb4e1807224ed95630970e197a9e59f4
http://gyazo.com/1c7770c4e7079914bfdc93143ff9715c
http://gyazo.com/0cd2a1440854f1f547b563f57b4a6120

Answer 1

Well is the domain the x or y value? Once you figure that out do you () or []?

Answer 2

For the first two, list the input/x values in braces and use commas to separate the values. For example {1, 2, 3}.

Answer 3

I can't read the numbers on the graph, but for the third one, the domain "begins" at the vertex of the parabola and continues to infinity.