Answer:
1. 30 2. 60=k
Explanation:
1. (3600/40) - (2400/20)
90- 120
-30
Flip
30
2. (20, 2400)(40,3600)
(Y2-Y1)/(X2-X1)
3600- 2400/ 40- 20
1200/ 20
Simplify
60= slope
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