Algebra & Precalculus Essentials
Curated Mathematics deck. Add it to your library and study with spaced repetition.
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What is the slope-intercept form of a line?
y = mx + b, where m is the slope and b is the y-intercept.
What is the quadratic formula?
x = (-b plus or minus the square root of (b squared - 4ac)) / 2a.
What is the slope of a line through two points?
The change in y divided by the change in x (rise over run).
What does the discriminant b^2 - 4ac tell you?
The number and type of roots: positive gives two real roots, zero gives one, negative gives two complex roots.
What is a function?
A relation that assigns exactly one output to each input.
What is the domain of a function?
The set of all valid input values.
What is the range of a function?
The set of all possible output values.
How do you factor x^2 - 9?
As (x + 3)(x - 3), a difference of squares.
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