P=2.50x+100
The slope of the function is 2.50 which represents the commission Dylan makes for each computer sale. :)
M = (-9 - 3) / (-5 - -2)
m = -12 / -3
m = 4
The slope is 4.
Roughly what I gave your doppelganger (you + 1) a few minutes ago . . .
[ (4 + 3)² - 1 ] divided by (7 - 3) .