Explanation:
y = 0x - 1.
Slope of the line = 0.
A line that is parallel to the original line must have the same slope, which is 0.
y = 0x + c.
When x = 8, y = -4.
-4 = 0(8) + c. So c = -4.
Hence the equation of the parallel line is y = -4.
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