Answer:
-4/3
Step-by-step explanation:
Slope = rise over run = y₂-y₁/x₂-x₁
Plug in the points: 12-(-4)/1-13
You should get: -4/3
5 loaves and 4
y = 70 and x = 20
180 - 40 = 140
140/2 = 70
70 + 90 = 160
180 - 160 = 20