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In a linear equation, the independent variable increases at a constant rate while the dependent variable decreases at a constant rate.
Answer:
Step-by-step explanation:

Add 5 to both sides

x = 6

Add 3 to both sides
x = -15 +3
x = -12
The answer is negative 1 . Because to find slope use formula . M=y2-y1/x2-x1 (1,-3) & (3,-5)
-5-3/3-1=-1