Question 530426: The graph of the following system yields perpendicular lines.
x + 2y = -10
-4y = 2x + 20
true or false? Answer by oberobic(2304) (Show Source):
You can put this solution on YOUR website! Get both equations into slope-intercept form and determine if their slopes are inverse reciprocals.
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x +2y = -10
2y = -x -10
y = -1/2*x -5
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-4y = 2x + 20
y = -2/4*x + 20/-4
y = -1/2*x - 5
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The lines' slopes are equal, so the lines are parallel.
In fact, the lines lie one on top of the other such that they appear to be same line.
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Answer: False. The lines are not perpendicular.
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The graph is useful.
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Done.
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