Patty uses reclaimed rainwater in her garden. At 2 p.m., the water level in her rain barrel was 1.8 inches. During a rain shower, from 3 p.m. to 8 p.m., the rain fell at a steady rate. At 8 p.m., the water level in her rain barrel was 3.0, Use this information for questions 4 through 7. 4. Determine two ordered pairs on the graph of this relationship. 5.Use the two ordered pairs to find the slope of the line. 6.Use the ordered pairs to write the equation of the line in point-slope form. 7. Use the two ordered pairs to write the equation of the line in slope-intercept form.​