# Scatter Plot and Regression Line

using the dataset CO2 as an example. After I find the regression lines of uptake and Plant (a factor with 12 levels)

lm(uptake ~ Plant, data = CO2)

Call:
lm(formula = uptake ~ Plant, data = CO2)

Coefficients:
(Intercept)      Plant.L      Plant.Q
27.21310    -22.94230     -4.61669
Plant.C      Plant^4      Plant^5
4.66802      2.33920      4.31450
Plant^6      Plant^7      Plant^8
-0.03902     -2.03649     -3.27825
Plant^9     Plant^10     Plant^11
-9.06702      0.54631      1.91215


Is there a way I can plot this and add the regression lines to the plot? Plant is a discrete variable, so what should the graph's x axis be? Thanks in advance!

• Could you tell us what you might mean by "regression lines"? That phrase doesn't seem to make any sense for this model. – whuber Jun 4 '17 at 19:45

plot()