SOLUTION: I am really confused with this question
Use slopes to show that (a) vectors (7,-2) and (-14,4) are parallel, and (b) vectors (7,-2) and (4,14) are perpendicular
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Use slopes to show that (a) vectors (7,-2) and (-14,4) are parallel, and (b) vectors (7,-2) and (4,14) are perpendicular
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Question 85378: I am really confused with this question
Use slopes to show that (a) vectors (7,-2) and (-14,4) are parallel, and (b) vectors (7,-2) and (4,14) are perpendicular Answer by scianci(186) (Show Source):
You can put this solution on YOUR website! (a) Note how (-14 , 4) = -2(7 , -2). Since these vectors are scalar multiples of each other, by definition that makes them parallel to each other.
(b) calculate the dot product of the vectors in question: 7(4) - 2(14). Since this = 0, that shows that these vectors are perpendicular to each other.
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