by DaleCallahan | Jan 9, 2014 | Frequently Asked Questions, General High School Questions
Question from Joe: The DVDs do not seem to play on Windows 8. Any suggestions? Answer from Dr. Callahan: Try this How to Play DVDs on Windows 8
by DaleCallahan | Dec 13, 2013 | Algebra
Question: We just started Elementary Algebra a couple weeks ago after frustration with Saxon. We are struggling with Chapter 2, Less 3, #6. How do I teach my son to determine if these graphed coordinates are a function? He understands the tables and graphing...
by DaleCallahan | Sep 14, 2013 | Algebra, Known Algebra Errors
Ch10.6 #17c The correct answer should have a minus sign and be (x^3 – y^3)^2
by DaleCallahan | Sep 5, 2013 | Algebra, Algebra Tests
First the total point on the test should be 56 and not 58! Second – the wrong problem is solved in the solutions. Should read Area = 48 So to solve for x you get 6(x+5) = 48 6x + 30 = 48 6x = 18 x = 3...
by DaleCallahan | Sep 5, 2013 | Algebra, Algebra Chapter 2
Question: Why does the perimeter not vary directly with it’s length (when the length changes) Answer from Dr. Callahan: If you look at the formula for perimeter is becomes P = 2x + 6 We see it is linear, y = ax + b but a direct variation is a subset of linear...
