Learn how to solve quadratic equations utilizing many different techniques. The quadratic formula can be used to solve all quadratic equations. Factoring quadratic equations can only be used if the function is factorable. If the linear term is missing, the square root method can be used.
Solve by Factoring Ex 1
Solve by Factoring Ex 2
Solve by Factoring Ex 3
Solve by Square Root Method
Solve Using the Quadratic Formula Ex 1
Quadratic Formula No Real Solutions
Application: Throwing a Ball
from a Building
Solve by Completing the Square
Solve by Completing the Square
Leading Coeff. not 1
Derive the Quadratic Formula by
Completing the Square
Learn how to graph quadratic functions using different techniques. Techniques include using transformations of the parent function, finding the vertex and intercepts, and graph using intercepts when the vertex is on the x-axis. The graph is called a parabola. A parabola can open up and have a minimum point, or the graph can open down and have a maximum. The domain is always all real numbers, and the range depends on the direction of opening and the location of the vertex.
Graph a Quadratic in Vertex Form
Using Translations
Vertical Stretches or Compressions of Quadratic Graphs
Using Vertex and Intercepts
to Graph
Using Intercepts to Graph
a Quadratic Function
Graph a Parabola Using Vertex
and Intercepts (down)
Functions
Quadratic functions are functions that are degree 2 polynomials. That means the highest exponent on a variable is two. Function notations is useful, because then you know what you plugged in for x to get the output. In some Algebra courses, you will have to find the quadratic function that passes through a given point with a given vertex.
Find the Function with the Given Vertex and y-intercept
Find the Function with the Given Vertex and a Point
Extrema are the extreme points of a graph. They are the maximum and/or minimum points of a graph. All quadratic functions either have a maximum value or a minimum value. The maximum occurs if the parabola opens downward, and the minimum occurs if the parabola opens upward. The maximum or minimum occur at the vertex (turning point) of the graph. The maximum or minimum is the y-coordinate only.