Quadratic functions can be transformed using the same transformations we learned in Unit 1.

We can calculate average rates of change between any two points on a quadratic function just like we learned in Unit 1.

A quadratic function can be represented in the same four ways we learned in Unit 1: graph, table, equation, verbal description.

Quadratic equations can be represented in 3 main forms: standard form, factored form, and vertex form:

• Standard form is helpful when needing to know the y-intercept of a quadratic function (e.g., when the input value is 0)

• Factored form is helpful when needing to know the "zeros" or x-intercepts of a quadratic function

• Vertex form is helpful when needing to know the vertex of a quadratic function (e.g., maximum or minimum value)

The three forms can be converted from one to another using fundamental algebra skills learned in Algebra 1:

• Factoring & Distributing

• Completing the Square

Quadratics can be solved using any of the following methods:

• Factoring

• Graphing and looking for zeros

• Quadratic formula

Quadratics sometimes have complex number solutions (involving the imaginary number "i "). As as result, working with complex numbers is covered here.