# Axis of symmetry problm

## The Attempt at a Solution

I would guess it is -b/2a but I have gotten this incorrect. Maybe I have to figure out what the parabola equation is and apply it into the axis of symmetry. Assuming that is correct how would I find that?

Thanks[/B]

Dick
Homework Helper

## The Attempt at a Solution

I would guess it is -b/2a but I have gotten this incorrect. Maybe I have to figure out what the parabola equation is and apply it into the axis of symmetry. Assuming that is correct how would I find that?

Thanks[/B]

You should be able to guess it like you guessed the other answers. Do you know what axis of symmetry means visually?

Isn't it the line which divide the parabola into two even parts. So the line that goes directly down the middle.

Dick
Homework Helper
Isn't it the line which divide the parabola into two even parts. So the line that goes directly down the middle.

Right. What is that line?

Look to be the y-axis itself?

Dick
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Look to be the y-axis itself?

Right again. Now what's an EQUATION for that line?

Oh I just looked up some information on this and it looks like x=0 would create a completely vertical line. Is this correct?

Dick
Homework Helper
Oh I just looked up some information on this and it looks like x=0 would create a completely vertical line. Is this correct?

Perfectly correct.

Awesome! Thank you for your assistance!

HallsofIvy