graphing parabolas (KristaKingMath)

In this video we learn how to put a quadratic equation into the standard form of a parabola, and then find the vertex of the parabola from its equation.

● ● ● GET EXTRA HELP ● ● ●

● ● ● CONNECT WITH KRISTA ● ● ●

Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;)

Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!”

[nathanstrubel]

Thanks for doing these videos. I'm in an Electronic Engineering Technology program and its been 12 years since I've had math. Your videos really helped me to review.

[johnhilliard]

You are such a good teacher! every time I watch one of your videos I learn something new.Many thanks.

[jacktrooper]

can you have more practice examples on parabolas and other curvy functions, your explanations on graph are intuitive and easy to understand.

[realtrickybilly]

Short question: how to do the opposite and get the function from a graph or from a bunch of numbers for x and y? Not just from a parabola or a "line" graph, but from ANY graph or ANY coordinates?
Longer version: Physics and mathematics are only my hobby. I use my Android phone's magnetometer to conduct experiments. If I put the phone closer to a magnet there is a peak, if further a "valley". The program not just draws the graph exports all measurements (coordinates of the graph) in MS Excel also. I want to play calculus on these measured data but I do not know the equation of that graph that has a couple of "peaks and valleys". I want to play around with mathematics and illustrate calculus in real life experiments.