# Where is the vertex ?

Level pending

$x(t) = 3 + 2t + 3 t^2$

$y(t) = 4 - t + 2 t^2$

A parabola is defined by the above parametric equations. It is plotted in the attached graph. If $$(a, b)$$ is the vertex of the parabola, find $$a + b$$.

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