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Question: Which of the following straight line is perpendicular to each other?
a. 2x+y=8
b. x=4
c. y=6
d. 2y=x+3
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| July 07, 2007 07:19:37 |
#1 |
| Rama krishna |
Member Since: Visitor Total Comments: N/A |
RE: Which of the following straight line is perpendicu...
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hi..
2x+y=8 and 2y=x+3 are perpendiculr to each other...(slope of a line ax+by=c is -b/a)
bcz slope of 2x+y=8 is -1/2 and slope of 2y=x+3 is -2
now consider their product=-1/2*2=-1
hence perpendicular...(if product of slopes of two lines is eqal to -1 then the lines are perpendicular)
and also x=4 and y=6 are perpendicular
bcz x=4 is parallal to Y-axis and y=6 is parallel to X-axis..
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