ocr: (a)y=mx+b (b)x X=X start +t(Xend - Astart y-yatanet(yena-Yaan - (C)L=L start +t(e end start/ Example 1: (a) Describing lines in slope-intercept form, wbereyisa function ofx; (b) describing lines in parametric form, wberex andy are decoupled from one unotber and described - - as a afunction ofthe parametert - L, (C) summarizing parametric lines.