Answer:
See below for answers and explanations (with attached graph)
Explanation:
It helps to transform the equation into vertex form by completing the square because it tells us a lot about the characteristics of the parabola:
Since vertex form is
, we identify the vertex to be
and the axis of symmetry to be
. The y-intercept can be found by setting
and evaluating:
Hence, the y-intercept of the parabola is
, or
as an ordered pair.