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The slope of the line perpendicular to the line 2x + y + 4 = 0 is A) -2 B) 2 C) \(\cfrac{1}2\)D)\(-\cfrac{1}2\) |
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Answer» Correct option is (C) \(\frac{1}{2}\) Given line is 2x + y + 4 = 0 \(\Rightarrow y=-2x-4\) By comparing with y = mx+c, we obtain \(m=-2\) Hence, slope of the line 2x + y + 4 = 0 is m = -2. \(\therefore\) Slope of line perpendicular to line 2x+y+4 = 0 \(=\frac{-1}{\text{slope of line 2x+y+4}}\) \(=\frac{-1}{-2}=\frac12\) Hence, the slope of the line perpendicular to the line 2x+y+4 = 0 is \(\frac{1}{2}.\) Correct option is D)\(\cfrac{1}2\) |
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