For two lines to be parallel they must have the same slope. A line parallel to a line with slope -2 would have a slope of -2.
-2. Slopes of parallel lines are the same. If the lines are different it is the intercedpt that is different.
2. Parallel lines have the same slope.
That one.
For any two perpendicular lines (save a vertical and a horizontal one), the product of their slopes is always -1. For two perpendicular lines with one having a slope of -2, the other will have a slope equal to -1 divided by -2, which equals 1/2.
Parallel
Lines with no slope are horizontal lines or flat lines
1/2
-2 (APEX)
Th opposite reciprocal. So if one line has a slope of 2 then the other line will have a slope of -1/2
Parallel lines have the same slope. So if you have a line with slope = 2, for example, and another line is parallel to the first line, it will also have slope = 2.
1/4