List of county routes in St. Lawrence County, New York. County routes in St. Lawrence County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. 1 Routes 1â30.
Quadratic Equation. An equation where the highest exponent of the variable (usually x) is a square (2). It is usually written ax2+bx+c = 0 Example: 2x2+5x-3 = 0. See: Exponent. Quadratic Equations.
The vertex form of a quadratic is given by y = a(x â h)2 + k, where (h, k) is the vertex. The  a  in the vertex form is the same  a  as in y = ax2 + bx + c (that is, both a 's have exactly the same value). The sign on  a  tells you whether the quadratic opens up or opens down. Think of it this way: A positive  a  draws a smiley, and a negative  a  draws a frowny.