MATH 110 Lecture Notes - Lecture 12: Flat Tax, Order Of Operations
Document Summary
Math 110 lecture 12 flat tax model; 4 equations of a line. Where r = tax rate, s = salary, e = exclusion, and t = taxed owed. If r = 4. 25%, e = ,800 for a family of 4, s = ,000. Plug the values into their respective places in the above equation. Therefore, the tax owed for a family of 4 is ,303. 50. Note: building off the last lecture, this is not an example of a direct proportion model. Because when s = 0, t does not equal 0. 4 equations of a line: point-slope form, slope-intercept form: y = y1 + m(x-x1) Where slope, m, equals y2 y1 x2 x1 y = mx + b. Where m = slope, b = y-intercept: horizontal line form: y = b for all x. No matter what x is, y will always be equal to b: vertical line form:
