A clean, printable 8.5x11 page featuring only a high-precision coordinate grid graph titled 'Cost of a Plumber' with plotted points at (1, 160) and (2, 220) and a line running from x = 0 to 8 with a slope of 60. The y-axis runs from 0 to 700 with a major gridline every 100 and minor gridline every 50. All point labels are positioned to the left.