PLEASE HELP! be detailed but not confusing.

Answer:
y=mx+b, where m is slope, b is y-int and x and y are variables.
S = 40N + 1600
Graphing:
Plot your y-int at (0,1600). Plot your slope in. Draw a line thru the points.
Points: (1,1640), (2,1680) etc
Hope that helps. Brainliest is greatly appreciated!