what is the relationship between coordinates of vertex and coefficients ?
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the graph of the quadriatic eqn opens up when the leading coefficient a>0. in this case vertex is the minimum point on the graph and no other value og y is lower than this.
the graph of the quadriatic eqn opens down if the leading coefficient a<0. in this case the vertex is the maximum point on the graph and no other value of y is larger than this.
the graph of the quadriatic eqn opens down if the leading coefficient a<0. in this case the vertex is the maximum point on the graph and no other value of y is larger than this.
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