Can someone explain to me why the x-axis of symmetry is always -b/2a : r/askmath

Can someone explain why the answer is B and not D? : r/Sat

Algebra 1] would the vertex be -5 cause it's in the center? Also for axis of symmetry I don't know what turning point means so I have no idea how to find

Problem Seems Unsolvable without additional information : r/askmath

Hi, Reddit! How do I solve this? : r/askmath

Can you find the equation of a parabola with a focus at its origin? - Quora

Can someone explain to me why the x-axis of symmetry is always -b/2a : r/askmath

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tikz pgf - Flatten an arc while keeping length fixed - TeX - LaTeX Stack Exchange

Math Physics Chemistry Questions Discussion Lists - Dated: 2018-07-21

Can someone explain to me why the x-axis of symmetry is always -b/2a : r/askmath

What is the definition of a parabola? Can the 'a' value be negative in a parabola equation? If so, what would that look like graphically? - Quora

I feel like this should be easy. Is there an equation that takes these four coordinates to the numbers 1 to 4? : r/askmath

tikz pgf - Flatten an arc while keeping length fixed - TeX - LaTeX Stack Exchange

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