Yes.
There are two regression lines if there are two variables - one line for the regression of the first variable on the second and another line for the regression of the second variable on the first. If there are n variables you can have n*(n-1) regression lines. With the least squares method, the first of two line focuses on the vertical distance between the points and the regression line whereas the second focuses on the horizontal distances.
When two lines are parallel, then they do not intersect.
If they were not actually parallel then they would not be parallel lines!
no parallel lines
it has parallel lines
parallel lines are diagonal lines or increasing lines
= parallel + perpendicular As such no, perpendicular lines do not naturally have parallel lines. However...connect the lines in the symbols below. ++ ++ And you'll have 4 perpendicular lines, and 4 parallel lines.
It is not.
the answer is parallel lines
No, parallel lines do not intersect, and never will.
parallel lines are slanted lines
Skew lines are not parallel. Parallel lines are across from each other in some way and are exactly parallel.