Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45
1 answer:
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and
are parallel to one another with slope 1. Any line with slope -1 is perpendicular to both of these lines, the simplest being
.
This perpendicular line intersects and
at the points (5/2, -5/2) and (1/2, -1/2), respectively.
The distance between and
is the same as the distance between these two intersections: