In this equation the 9.1 would represent the amount the tip would have been before the adjustment is made (1.4d) for the dessert.
For points (x1,y1) and (x2,y2)
slope=(y1-y2)/(x1-x2)
(-4,-13)
(19,11)
x1=-4
y1=-13
x2=19
y2=11
slope=(-13-11)/(-4-19)=-24/-23=24/23
B is answer
Well this factor has to the answer b.) hope I helped.
Answer:
-5.2, -4.75, -9/2
Step-by-step explanation: