Explanation:
If it is parallel to the line y = -x + 6, they have the same gradient and the gradient is the coefficient of x which is -1.
We use the equation y=mx+c
Y is 2
M is -1
X is -4
2 = (-1×-4) + c
2 = 4 + c
C = 2 - 4 = -2
Y = -x -2
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