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anonymous
 5 years ago
Which of the following equations describes a line that is
perpendicular to 3x + 7y = 9?
7x + 3y = 7
3x  7y = 7
7y = 3x + 7
7x  3y = 7
anonymous
 5 years ago
Which of the following equations describes a line that is perpendicular to 3x + 7y = 9? 7x + 3y = 7 3x  7y = 7 7y = 3x + 7 7x  3y = 7

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nowhereman
 5 years ago
Best ResponseYou've already chosen the best response.0Just take the vectors for the direction of the lines and check whether they are perpendicular, i.e. their scalar product is zero.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1flip x and y and negate one.....the last one looks good

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if ax+by+c=0 be the equation of a line then equation of the line which is perpendicular to the given line is given by bx ay +d= 0 so 7x3y =7 is the answer
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