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General Form of a Straight Line

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Question

how to know whether the two straight lines are perpendicular to each other ? how to find the slope of given equation that is : 3x+4y=5?

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Solution

When the product of the slopes of two lines comes out to be -1 the two lines are perpendicular.
slope of the line 3x+4y=5
= -(coefficient of x)/coefficient of y
= -3/4

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