Q: How can we tell if two lines are parallel perpendicular or neither just from their equations?

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Neither perpendicular nor parallel

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PERPENDICULAR

perpendicular.

The straight line equation is y = mx + b. If they do not cross and have the same slope they are parallel; if they cross and the slope (m) of one of them is the negative inverse slope of the other (-1/m) they are perpendicular. Otherwise they are neither

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Neither perpendicular nor parallel

I'll get back to you as soon as I've seen the video.

Two lines are parallel if and only if they have the same slope. Two lines are perpendicular if the product of their slopes is -1. If neither of these conditions are met, the lines are nether parallel, or perpendicular.

No, oblique lines are neither parallel nor perpendicular

That depends on the specific situation. You may want to measure angles (perpendicular lines are at a right angle, i.e., 90Â°). If you have equations for line, write them in the slope-intercept form. Parallel lines have the same slope. If lines are perpendicular, the product of their slopes is -1.

Parallel

Diagonal

Lines that are neither parallel nor perpendicular.

= 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.

neither

In two dimensions: They are parallel if their gradients are the same. They are perpendicular if the product of their gradients is -1. Otherwise they are neither. The nature of the question suggests that you have not yet studied lines in 3 or more dimensions.

Lines that are neither parallel nor perpendicular.