Algebra8 cards

Algebra Essentials flashcards

Formulas and rules that come up in every algebra course.

Keyboard: Space flips the card; 1 to 4 grade it (Again, Hard, Good, Easy).

All cards in this deck

Slope between two points: $m = \frac{y_2 - y_1}{x_2 - x_1}$
Slope-intercept form: $y = mx + b$
Point-slope form: $y - y_1 = m(x - x_1)$
Quadratic formula: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$
Difference of squares: $a^2 - b^2 = (a - b)(a + b)$
Perfect square trinomial: $a^2 + 2ab + b^2 = (a + b)^2$
Negative exponent: $a^{-n} = \frac{1}{a^n}$
What happens to an inequality when you divide by a negative?: The inequality sign reverses.