Answer:

Step-by-step explanation:
The formula of a slope:

We have the points (1, -1) and (6, 2).
Substitute:

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There isn't enough information shown to kniw
Answer:
Maths room
Step-by-step explanation:
because it is the best room.
Answer: None
Step-by-step explanation:
There are no pairs of congruent sides, so the triangles cannot be proven congruent.