A parallel equation (when graphed) will have the same slope, but a different y-intercept.
As long as you keep y = -
x + b, you can input anything for b to solve this question.
Given:
y = -
x - 5
Equation of a parallel line:
y = -
x + 6, y = -
x + 1,356, y = -
x - 8, etc
Example answer you can use:
y = -
x - 8