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.
Linear Functions. If the power of both x and y in a relation is one, then the relation is called a linear relation or linear function. For example, y = 3x + 5, 7x  8y = 56 and 2x + 3y + 6 = 0 are linear functions because the power of both x and y is one. Plotting Graphs of Linear Functions.