Answer:
B) 3.5cm
Step-by-step explanation:
1/80 = n/280
1 * 280 = n * 80
280 = 80n
3.5 = n or n = 3.5
Here is the cords:
(-2,-7) = (-7,-1)
(-1,-4) = (-6,2)
(5,-6) = (0,0)
