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Vertex of a Parabola
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Graphing Quadratic Functions Using Vertex Form and Intercept Form
Concept
Vertex of a Parabola
Because a
parabola
either opens upward or downward, there is always one point that is the
absolute maximum
or
absolute minimum
of the
function
. This point is called the
vertex
.
At the vertex, the function changes from
increasing to decreasing
, or vice versa.
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