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Category Archives: Linear Functions
Cylinder Linear Approximation
Linear approximations aren’t very intuitive when you’re only looking at symbols on a page. In this problem, I make it easier to understand how and why linear approximations are useful, and make it easier to digest by using a physical … Continue reading
Calculate the Derivative at a Point
Finding the derivative at a given point is easy. You just calculate the derivative, then plug in the value that you’re given — the x-value that you need the derivative at. Just remember this is a two-step process, and the … Continue reading
Posted in Linear Functions, Media, Pencast
Tagged calculus, derivative, graph, point-slope
6 Comments
Point Slope form for a Line
This pencast, Eric describes how to write the point slope form for a line. If you are studying caculus, this is the one you really need to learn, since the derivative gives us the slope of a function at a … Continue reading
Posted in College Algebra, Linear Functions, Lines, Pencast
Tagged Eric, lines, Pt-Slope Form, slope
4 Comments
Finding the Slope of a Line Expressed in Standard Form
Often when we are doing calculus, we have to find the slope of a line. I mean, the line that is tangent to a curve or function is the best estimator of that function when you are really close to … Continue reading
Posted in College Algebra, Linear Equations, Linear Functions, Lines, Media, Pencast
Tagged lines, slope, standard form
2 Comments
Finding Intercepts
Forget everything you know about rules for finding intercepts! If you can’t remember where the rule came from then it is wrong from the get go! Instead, work toward understanding the graphical nature of what an intercept is, and how … Continue reading
Posted in College Algebra, Factoring, Roots, Linear Equations, Linear Functions, Lines, Media, Pencast, Plotting, Graphs
Tagged intercepts, lines, roots
1 Comment
