Parallel
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. Parallel lines have the same slope.
-2. Slopes of parallel lines are the same. If the lines are different it is the intercedpt that is different.
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.
Two lines that are in the same plane and never intersect are called "Parallel," meaning that they are lines with the same slope, but not y-intersect.
If it's parallel then it has the same slope, so -2/3. The formula for both of these lines is -2/3x + c.
The slope of any parallel lines is always the same. Parallel means they are co-planar which means lie in the same plane, and never intersect. In order for the lines to not intersect you would need the same slope. In this case the answer is -2/3.
That one.
AB
The line y = 2x If you put it into the form y = mx + b, you have y = 2x + 0 so the slope is 2. Lines parallel to that line have the same slope, 2. Perpendicular lines have slopes that multiply to -1. The slope of a perpendicular line to a line of slope 2 would be -1/2.
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.
The slope of line AB will be 1/2. Two parallel lines will always have the same slope, so if you know the slope of one line that is parallel to another, you know the other line's slope.