Vertex on a Quadratic formula

http://www.virtualnerd.com/algebra-1/quadratic-equations-functions/graphing/graph-basics/vertex-example

Distancia entre puntos

https://youtu.be/Yw8y550vF-s

Imprime tu propio papel gráfico

Si quieres practicar en casa, descarga e imprime los ejes de la siguiente página:
http://www.math-aids.com/Graph_Paper/

Solving quadratic equations using quadratic formula

Using the quadratic formula is often the most convenient way.
The general quadratic equation is

Here x represents an unknown, while a, b, and c are constants with a not equal to 0.

 


Worksheet: http://cdn.kutasoftware.com/Worksheets/Alg1/Quadratic%20Formula.pdf
Methods review: https://prezi.com/xk8qz0f2ijys/solving-quadratic-equations/

 
https://www.khanacademy.org/math/algebra/quadratics/solving-quadratics-using-the-quadratic-formula/v/using-the-quadratic-formula

Pendiente en una recta

Para obtener la pendiente en una recta, es necesario que primero sepamos como encontrar la pendiente de la recta a través de la gráfica y luego, que seamos capaz de encontrar la pendiente que pasa por dos puntos cualesquiera.

Aquí tienes unos ejemplos:
https://es.khanacademy.org/math/algebra-basics/core-algebra-graphing-lines-slope/core-algebra-slope/v/slope-of-a-line
https://es.khanacademy.org/math/algebra-basics/core-algebra-graphing-lines-slope/core-algebra-slope/v/slope-of-a-line-2

Solving quadratic equations completing the square

https://youtu.be/bclm1tJB-3g

Solving Quadratic Equations. All the methods!

We can solve quadratic equations using different methods, all of them are already collected in this page:
https://learnzillion.com/resources/72901-solve-quadratic-equations-by-inspection-taking-square-roots-completing-the-square-the-quadratic-formula-and-factoring

Inspection:
https://learnzillion.com/lesson_plans/5125-solve-a-quadratic-equation-by-inspection

Square roots:
https://learnzillion.com/lesson_plans/5135-solve-a-quadratic-equation-by-taking-a-square-root