- The
**standard form**of the equation of a line is Ax + By = C with*A*and*B*not both zero. - The
**slope-intercept form**is y = mx + b. - The
**point-slope form**is y - y_{1}= m(x - x_{1}).

Drag the sliders to change the values of *m* and *b*.

- The
**standard form**of a quadratic function is f(x) = ax^{2}+ bx + c. - The
**vertex form**of a quadratic function is f(x) = a(x - h)^{2}+ k.

Drag the sliders to change the values of *a*, *b* and *c*.