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Answer:
The answer is

Step-by-step explanation:
The slope of a line given two points can be found by using the formula

where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
(-4,7) and (-1,3)
We have

We have the final answer as

Hope this helps you
Answer:
r=-6
Step-by-step explanation:

Answer:
1:25 (dm:km)
Step-by-step explanation:
For the ratio, you compare two units.
Naturally, we could say that 2 dm corresponds to 50 km
Written in fraction form:
2dm/50km
Simply the fraction normally:
1dm/25km
Just replace the "/" with ":"
1:25 (dm:km)