1) graphs y = -9x + 12 and y = 1/3x - 12 are not coincident.
2) The graphs are not parallel, because the angular coefficients are not equal
3) The condition of perpendicularity:
, where
- not perpendicular
Answer:
n = 12.89
Step-by-step explanation:
Add 9.02 + 3.87
20%
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