Find the focus of a parabola represented by the equation 
with vertex at (-1, -4).
Correct Answer:
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Q12: Given the point (2, 20) on a
Q13: Specify whether the vertex of this parabola
Q14: Determine whether this parabola is concave up
Q15: Put the quadratic into standard form:
Q16: Find the equation, in standard form, of
Q18: Find the focus of a parabola represented
Q19: Select the equation whose graph is the
Q20: Select the choice which best describes the
Q21: Select the equation whose graph is the
Q22: Select the choice which best describes the
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