y = -2
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A straight line parallel to the x-axis has a slope of 0 because it does not change along the x-axis.
The equation of a straight line is in the form y = mx + b, where m is the slope and b is the y-intercept.
In this case, the line is parallel to the x-axis, so the slope is 0.
The y-intercept given is -2, so the equation of the line becomes:
which simplifies to: