Writing Equations of Parabolas

Write the equation of a parabola given a vertex and a point.

[ExaltedXero]

Hey thankyou very much. This actually helped me on my test =)

[name]

Had a take home quiz. Helped me so much thanks.

[xrayne]

you have saved me. I have my test tomorrow.

[saifjawaad]

Thank you, really easy to understand.

[DreamPink]

Thank you for this demonstration! For a week I've been trying to find a well explained video and I've finally found it :) This really helped.

[DrShatter]

Good job love the video nice and clear thanx a lot ur a great help :)

[coreycrick]

the formula that he says is vertex form is call the standard for in most precalc books but this is a good video other than that 

[noorbakht]

Thank you so much! This video was a great help!

[jerseygirlthing]

This helped me so much! Thanks a million!

[boyou]

do you just select a random point on parabola?

[ILLESTGS]

What if the vertex isn't given ??

[alainxx]

(-1)^2 is = to 1 and 1-6 is -5 not 6 you did it wrong