In the equation of a line, y=mx + b, what does b stand for? What is the value of b for the line of best fit. On line I or the blue line

Answer:
B stands for the y-intercept
Line L or the blue line is the line of best fit
Step-by-step explanation:
Normally for the line of best fit, the line needs to have an equal amount of points above and below it, kinda like a median. It just stands in the middle. So from the given lines, the blue line is the best choice.
Good Luck!
Brainliest?
Answer:
im pretty sure that B is the number of dogs he tested which would be 20
its line of best fit would be the blue line
Step-by-step explanation: