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We will look at the identity matrix and multiplicative inverses of matrices. We will find the inverses of 2x2 matrices.

We will compute determinants for 2x2 and 3x3 matrices.

A brief review of slope and lines at the beginning of a precalculus course. We cover finding slope, slope intercept form and the slope intercept form of the equation of a line, vertical and horizontal lines and equations. There is an emphasis on finding x and y-intercepts as a method of graphing. We will also review some ways to use the TI-Nspire handheld calculator.

We will review the concepts of a relation, function, domain, and range at the beginning of a precalculus course. We will find the domain from a set of ordered pairs, from a graph as well as algebraically. We will use graphs and the TI-Nspire handheld calculator to find the range of functions and relations.

At the beginning of a precalculus course, we will review compositions of functions, and find the inverses of functions, both with and without the use of our TI-Nspire handheld calculator. We will also review vertical and horizontal translations of functions and vertical stretch/compression of functions.

We will use our TI-Nspire handheld calculator to enter data and find the appropriate linear regression equation. We will use a graph page and adjust the window appropriately to graph a trig function. We will evaluate trig functions on a calculator page. We will use a graph page to solve a trigonometric equation and then use a calculator page to convert our radian answers into degree measures.