The point slope form of a line requires a line to be a function. In order to be a function, the line must have exactly 1 y value for 1 x value. Since the x value -6 has two possible y values, it is not possible to use point-slope form.
Since there is a shortage in the budget in 2005 by 553,656,965,393.18, the total debt that of the United States in 2005 will be the public debt by 2004 added with this deficit in the budget. Having said that, the public debt by 2004 should be equal to, $ 7.9327 x 10^12
