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Answer:
y = -x - 7.9
Step-by-step explanation:
Given:
m = -1
b = -7.9
y = mx + b
y = -x - 7.9
we can always find the slope of any line by simply using two points on the line, say let's use (3,4) and (-1,2)

B I really believe you just got to read it carefully
Answer:
y = 4 and x = 12
Step-by-step explanation:
Step by step explanation in the pic. Atleast the way I did it.