Answer:
D. m = 0 - y / 0 - x
Explanation:
It is not a way of calculating the slope.
The other ways :
- A. m = rise / run [correct]
- B. change in y / change in x [correct]
- C. y₂ - y₁ / x₂ - x₁ [correct]
All of these methods represent the same way, but represented in different forms, to find the slope.
Hence, only D is not a way of calculating the slope.