1. Linear is the property of a mathematical relationship or function which means that it can be graphically represented as a straight line that one quantity is simply proportional to another.
2. Linear
3. A quadratic function is one of the form f(x) = ax^2 + bx + c, where a, b, and c are numbers with a not equal to zero. The graph of a quadratic function is a curve called a parabola. Parabolas may open upward or downward and vary in "width" or "steepness", but they all have the same basic "U" shape.
