PARALLEL lines have EQUAL SLOPES. So if one line has a slope of 2/3, then a parallel line has a slope of 2/3.
Video Lesson on PERPENDICULAR Slopes and Lines
PERPENDICULAR LINES have slopes that are NOT EQUAL. They are OPPOSITE IN SIGN (if one is negative the other is positive; if one is positive the other is negative) AND they are FLIPPED (reciprocals). So if one line has a slope of 2/3 then a perpendicular line has a slope of - 3/2
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Question 1
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Tell whether the following pairs of points are PARALLEL, PERPENDICULAR, or NEITHER. *HINT: calculate the slope.
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Question 2
2.
Tell whether the following pairs of points are PARALLEL, PERPENDICULAR, or NEITHER. *HINT: calculate the slope.
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Question 3
3.
Tell whether the following pairs of points are PARALLEL, PERPENDICULAR, or NEITHER. *HINT: calculate the slopes.
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Question 4
4.
Tell whether the following pairs of points are PARALLEL, PERPENDICULAR, or NEITHER. *HINT: calculate the slope.
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Question 5
5.
Tell whether the following pairs of points are PARALLEL, PERPENDICULAR, or NEITHER. *HINT: calculate the slope.
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Question 6
6.
Tell whether the following pairs of points are PARALLEL, PERPENDICULAR, or NEITHER. *HINT: calculate the slope.