Author Archives: admin

Algebra: Chapter 13, Lesson 2, page 580. More Solving Quadratic Equations Solve a quadratic equation of the form `ax^2 = k` Example: `-3x^2 + 7 = 0` becomes … `-3x^2 = -7` or `x^2=7/3` then `x = ±sqrt(7/3)`, don’t forget … Continue reading →

Algebra: Chapter 13, Lesson 1, page 576. Introduction to Quadratic Equations An equation that can be written in the form of `ax^2 + bx + c = 0` is a quadratic equation. This is the “standard form”. The solutions of … Continue reading →

Algebra: Chapter 11 BENCHMARK! ====================================================================== Algebra 1a: CST Review – X-Y Graphing and more square root review! Remember to graph, x (sideways) and y (vertically) and you’ll be OK!

Algebra: Chapter 12, Lesson 4, page 552. Quadratic Functions A quadratic function is defined by `f(x) = ax^2 + bx + c`. To make it easier, just replace the `f(x)` with `y` and treat as you have done in the … Continue reading →

Algebra: Chapter 12, Lesson 1 and Lesson 2, page 536 and 542. Relations and Functions and Graphs A relation is a set or ordered pairs. The domain of a relation is the set of first coordinates (the x’s). The range … Continue reading →

Algebra: Chapter 11 Review! ====================================================================== Algebra 1a: CST Review Square Roots: The `sqrt(25) = 5`. The `sqrt(5)` can be approximated as somewhere between the `sqrt(4)` and the `sqrt(9)`. `sqrt(9)=3` `sqrt(5) = ?` `sqrt(4)=2`, so `sqrt(5)` is closer to `sqrt(4)` than … Continue reading →

SNOW DAY #5

Algebra: Chapter 11, Lesson 9, page 519. Equations with Radicals A radical equation contains a variable in the radicand. To solve radical equations, first convert them to equations without radicals. Just like taking the square root of 2 sides of … Continue reading →

Algebra: Chapter 11, Lesson 7 and Lesson 8, page 509 and 514. Theorem of Pythagoras and its Uses `c^2 = a^2 + b^2`, where `a`, `b` and `c` are the sides of a RIGHT TRIANGLE. `a` and `b` are considered … Continue reading →

Algebra: Chapter 11, Lesson 7 and Lesson 8, page 509 and 514. Theorem of Pythagoras and its Uses `c^2 = a^2 + b^2`, where `a`, `b` and `c` are the sides of a RIGHT TRIANGLE. `a` and `b` are considered … Continue reading →