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Mathematics 13 Online
OpenStudy (anonymous):

What is the axis of symmetry for f(x) = −5x2 − 20x − 10? Can anyone help me?

myininaya (myininaya):

Do you know how to find the vertex of a parabola? |dw:1401995282925:dw|

myininaya (myininaya):

|dw:1401995393173:dw| If we can figure out the x-coordinate of that vertex then we can figure out the equation of that line drawn here through the parabola at that particular point.

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