Why: The definition of a linear function is "Linear functions<span> are those whose graph is a straight line. A </span>linear function<span> has the following form. y = f(x) = a + bx. A </span>linear function<span> has one independent variable and one dependent variable. The independent variable is x and the dependent variable is y," and as you can see, the only one that is a straight line that goes across the graph would be B.</span>
