PreCalc Semester 1 Review

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

To find the inverse of a function, swap the x and y variables and solve for y.

The graph of a quadratic function is a parabola, which opens upwards or downwards depending on the coefficient of the x^2 term.

The composition of functions f(g(x)) means to apply function g first, then apply function f to the result.

A graph represents a function if any vertical line drawn intersects the graph at most once (Vertical Line Test).

The standard form is Ax + By = C, where A, B, and C are integers, and A should be non-negative.

A linear function has a constant rate of change and graphs as a straight line, while a quadratic function has a variable rate of change and graphs as a parabola.

To find the y-intercept, set x = 0 in the equation and solve for y.

The vertex is the highest or lowest point of the parabola, depending on its orientation.

The vertex (h, k) can be found using h = -b/(2a) and k = f(h) for a quadratic in the form y = ax^2 + bx + c.