Write an equation of the line that passes through the given point and is parallel to the given line.
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16. (
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Write an equation of the line that passes through the given point and is perpendicular to the given line.
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19. Explain how you can tell whether two lines are perpendicular or parallel given only the equations of the
lines.
20. Write the equations of any two lines that are parallel. Then write an equation of a line that is
perpendicular to those two lines.