Question

How to identify the y-interceptdomain range and axis of symmetry

Answer 1

The y-intercept is the point at which the function crosses the y-axis. This function crosses both axis at the origin, so the y-intercept is (0,2).

The domain of the function are the possible values of the input of the function. On this case the function keeps growing to both sides (right and left), therefore the domain is:

`(-\infty,\infty)`

The range of the function are the possible values of the output of the function. On this case the function never has negative values, so the range is:

`\lbrack0,\infty)`

The axis of symmetry is the line that crosses the vertex of the function, in this case is the line x=-1.