A linear function is a polynomial function in which the variable x has degree at most one: = +. Such a function is called linear because its graph, the set of all points (, ()) in the Cartesian plane, is a line. The coefficient a is called the slope of the function and of the line (see below). So what about a Table Of Values? Since, as we just wrote, every linear equation is a relationship of x and y values, we can create a table of values for any line. These are just the $$ x $$ and $$ y $$ values that are true for the given line. In other words, a table of values is simply some of the points that are on the line.
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