lines 71 videos

The Complex Plane
Precalculus Polar Coordinates and Complex Numbers
How to plot complex numbers on the complex plane.
real numbers the number line complex numbers imaginary numbers the complex plane 
Computing Difference Quotients
Precalculus Introduction to Functions
How to compute and simplify the difference quotient of a linear function.
functions function notation slope secant line difference quotient 
Glide Reflections
Geometry Transformations
How to describe a glide reflection and identify the information needed to perform a glide reflection.
composition of transformations translation glide reflection parallel lines ordered pair rule 
Rectangular Coordinate System
Algebra 2 Graphs of Linear Equations
How to talk about the rectangular coordinate system.
rectangular coordinate system xy axis quadrant points on a line finding intercepts 
Solving a System of Linear Equations in Two Variables
Algebra 2 Systems of Linear Equations
How to solve a system of linear equations in two variables.
solving a system in two variables substitution elimination intersection parallel same line 
Computing Difference Quotients
Precalculus Equations of Lines, Parabolas and Circles
How to compute and simplify the difference quotient of a linear function.
functions function notation slope secant line difference quotient 
The Geometric Representation of Vectors
Precalculus Vectors and Parametric Equations
How to understand what vectors are, and how they can be represented geometrically.
Magnitude Direction Scalar Vector Directed Line Segment Initial Point Terminal Point 
Converting from Polar Coordinates to Rectangular
Precalculus Polar Coordinates and Complex Numbers
How to convert a polar equation into rectangular form.
polar coordinates rectangular coordinates polar equations lines circles Pythagorean theorem sine cosine tangent 
Reflections
Geometry Transformations
How to describe the effect of a reflection, how to describe the effect of the ordered pair rules (x,y) > (x, y),(x,y) > (x, y), (x,y) > (y, x).
transformation isometry orientation image equidistant ordered pair rules map x axis y axis line y = x 
Solving a Quadratic Inequality using a Sign Chart
Algebra 2 Quadratic Equations and Inequalities
How to solve a quadratic inequality using a sign chart.
sign number line sign chart less than greater than quadratic inequality