... reversed if the constant is negative. In either case the new inequality is equivalent to the original. For example, to solve the inequality -+ 3517x, -+ - - - - - - 3517312 ... solved by the formula: xbb aca= - - 242. For example, in the quadratic equation 2602xx =, a = 2 , b= - 1, and c= - 6. Therefore, the formula yields x = () - () - () - ()()==114262214941742 ... the y-coordinate of the point at which the graph intersects the y-axis. The y-intercept of line PQ in the example above appears to be about -1 5., since line PQ intersects the y-axis close to...