The graph shows how the rate of photosynthesis in a land plant changes with light intensity.
Which part of the graph could be represented by the linear equation y=mx+cy = mx + cy=mx+c (where m>0m > 0m>0)?
From 0 to 4 000 lux
From 4 000 to 8 000 lux
From 8 000 to 12 000 lux
From 12 000 to 16 000 lux