For the function f(x) = - 5x , make a table of slopes of secant lines and make a conjecture about the slope of the tangent line at x = 3. Complete the table. (Do not round until the final answer. Then round to the nearest thousandth as needed.) Interval Slope of the Secant Line [2, 3] [2.5, 3] [2.9, 3] [2.99, 3] [2.999, 3] It can be conjectured that the slope of the tangent line at x = 3 is (Round to the nearest integer as needed.)