Category Archives: Math 8

Algebra: Chapter 6-6, p 281 Factoring by Grouping See yesterday’s post and these lessons from purplemath.com  Math-8, Chapter 9-1, p 432 Ratios and Rates A RATIO is a comparison of 2 numbers by division, like `5/20` or `5:20` or 5 … Continue reading →

Algebra, Chapter 6-5 and 6-6, p 278 and p281 Factoring `ax^2 + bx + c` (Friday) See yesterday’s notes on the BOX and CROSS method. Check out the podcast to see the lesson again. Factoring by Grouping (Monday) Factoring by … Continue reading →

Algebra: Chapter 6-4, p 276 and Chapter 6-5, p 279 Factoring `x^2 + bx + c` and `ax^2 + bx + c`  I don’t like the approach the textbook uses to factor generalized trinomials or quadratics. Remember that these are … Continue reading →

Algebra: Chapter 6-4, p 273 Factoring `x^2 + bx + c` In the polynomial `x^2 + bx + c`, remember that `c` is called the constant term or just the constant. If the constant of a poynomial `x^2 + bx … Continue reading →

Algebra: Chapter 6-3, p 270 Trinomial Squares We are going backward again, using the properties: `(a + b) * (a + b) = a^2 + 2ab + b^2 = (a + b)^2` `(a – b) * (a – b) = … Continue reading →

Algebra: Chapter 6-1 and 6-2 and Chapter 5 Review (Friday, March 7 and Monday, March 10) Algebra worksheets 12.11, 12.12, 13.1 and 13.2 Make sure that you know how to do the box method, FOIL, distribution and the difference of … Continue reading →

Algebra: Chapter 6-1, p 262 Factoring Polynomials Factoring is the reverse of multiplying. To factor an expression mean to write an equivalent expression that is the product of 2 or more expressions. To factor a monomial, we find 2 monomials … Continue reading →

Algebra, Chapter 5 TEST Test Today! Math-8, Chapter 8-6, p 400 Slope of a Line The slope of a line is the tilt or slant. The slope is defined as the letter `m` and `m=rise ÷ run`, where the rise … Continue reading →

Algebra: Chapter 5 Review – Day 2 Be ready tomorrow! Math-8, Chapter 8-4, p 392 Equations as Functions When evaluating a function, equations are written in FUNCTIONAL NOTATION, `f(x)`. The `f(x)` is read “f of x”. Instead of having `y=x+4`, … Continue reading →

Algebra: Chapter 5 Review Be ready for the test on Tuesday! Math-8, Chapter 8-3, p 385 Graphing Linear Relations We recall that the DOMAIN is the same as the X VALUES and the RANGE is the same as the Y … Continue reading →