Curated Video
Defining Linear Functions by Comparing Graphs
In this lesson, students will learn to define linear functions by comparing graphs. They will understand that linear functions are represented by straight lines, and that as you move from left to right on a linear function, you are also...
Music Matters
Name the Composer Quiz! - #4 Do you know your classical composers?
How well do you know your classical composers? Find out with our name the composer quiz! We present ten facts about a random composer, see if you can guess the correct answer by the end of the video.
NASA
IBEX: Exploring The Edge Of Our Solar System
This video explains the way IBEX will create a global map of the boundaries of our solar system. The two Voyager spacecraft launched in the 1970s gave data for two points on the map, but by using energetic neutral atoms, IBEX images the...
Brian McLogan
Learn how to write the equation of a circle given a point and the center
Learn how to write the equation of a circle. A circle is a closed shape such that all points are equidistance (equal distance) from a fixed point. The fixed point is called the center of the circle while the distance between any point of...
Brian McLogan
Finding the slope from a graph and table
👉 Learn how to find the rate of change from graph. The rate of change is the rate at which y-values are changing with respect to the change in x-values. To determine the rate of change from a graph, a right triangle is drawn on the graph...
Brian McLogan
How to Graph a Quadratic Piecewise Function
👉 Learn how to graph piecewise functions. A piecewise function is a function which have more than one sub-functions for different sub-intervals(sub-domains) of the function's domain. To graph a piecewise function, we graph the different...
Brian McLogan
How to graph and determine the directrix focus and vertex
Learn how to graph a parabola in standard form when the vertex is not at the origin. We will learn how to graph parabola with horizontal and vertical openings. In addition to graphing, you will also learn how to identify the important...
Brian McLogan
Determine the intervals that a graph is increasing and decreasing
👉 Learn how to determine increasing/decreasing intervals. There are many ways in which we can determine whether a function is increasing or decreasing but we will focus on determining increasing/decreasing from the graph of the function....
Brian McLogan
Given a formula of hyperbola in standard form find foci, asymptotes, center vertices
Learn how to graph hyperbolas. To graph a hyperbola from the equation, we first express the equation in the standard form, that is in the form: (x - h)^2 / a^2 - (y - k)^2 / b^2 = 1 for horizontal hyperbola or (y - k)^2 / a^2 - (x - h)^2...
Brian McLogan
Where does the cosecant graph come from?
👉 Learn the basics of graphing the secant and the cosecant graphs. Recall that the secant is the reciprocal of the cosine while the cosecant is the reciprocal of the sine. Also recall that the cosine graph is a sinusoidal graph with...
Brian McLogan
What do I have to know to graph the tangent and cotangent function
👉 Learn the basics of graphing a tangent and a cotangent function. To plot the tangent and the cotangent graph we choose a set of points and form a table of values with which we plot the points on the x-y coordinate axis to obtain the...
Brian McLogan
Learn how to determine the domain and range from a table and from a graph
👉 functions are the possible output values (y-values) of the function. To find the domain of a function from a table we list out the set of the input values and for the range we list out the set of output values. To find the domain and...
Brian McLogan
Graphing a quadratic function in standard form
👉 Learn how to graph quadratics in standard form. A quadratic equation is an equation whose highest exponent in the variable(s) is 2. To graph a quadratic equation, we make use of a table of values and the fact that the graph of a...
Brian McLogan
Learn how to graph a linear inequality
👉 Learn how to graph linear inequalities written in slope-intercept form. Linear inequalities are graphed the same way as linear equations, the only difference being that one side of the line that satisfies the inequality is shaded. Also...
Brian McLogan
Graphing an inequality with vertical and horizontal lines
👉 Learn how to graph linear inequalities with one variable. Linear inequalities are graphed the same way as linear equations, the only difference being that one side of the line that satisfies the inequality is shaded. Also broken line...