Question

The graph of a quadratic function with vertex (1,-3) is shown in the figure below.

Find the domain and the range.

Answer 1

Domain: (-∞, ∞), Range: [-3, ∞)

Explanation:

Domain is all of the possible x-values in a solution set, in this case since the solution extends infinitely horizontally it would be:

(-∞, ∞)

The range is just all of the possible y-values in a solution set, which in this set starts from -3 and proceeds on infinitely, making the range:

[-3, ∞)