2. a style of dance music marked by some of the features of jazz.
The graph of y = 2x+1 is a straight line. 1  When x increases, y increases twice as fast, hence 2x. 2  When x is 0, y is already 1.  So: y = 2x + 1.
A: In mathematics, linear refers to an equation or function that is the equation of a straight line and takes the form y = mx + b, where m is equal to the slope, and b is equal to the y-intercept.