1. The problem states the relationship between pages printed $y$ and time $x$ in minutes is given by the formula $$y = 120x$$ where $y$ is the number of pages and $x$ is the time in minutes. 2. To find how many pages are printed in 1 minute, substitute $x = 1$ into the formula: $$y = 120 \times 1 = 120$$ So, 120 pages are printed in 1 minute. 3. To find how many minutes are needed to print 600 pages, set $y = 600$ and solve for $x$: $$600 = 120x$$ Divide both sides by 120: $$x = \frac{600}{120} = 5$$ So, it takes 5 minutes to print 600 pages.