The table shows the height of a plant as it grows. What equation in point-slope form gives the plant’s height at any time?
Let y stand for the height of the plant in cm and let x stand for the time in months.
Time (months): 3; Plant Height (cm): 9
Time (months): 5; Plant Height (cm): 15
Time (months): 7; Plant Height (cm): 21
Time (months): 9; Plant Height (cm): 27