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Is 3x plus 2y equals 5 and 3x plus 2y equals 9 perpendicular or parallel?
Wiki User
∙ 14y ago
We need to get both equations into slope-intercept form. If they are parallel, they will have the same slope. If they are perpendicular, they will have slopes that when multiplied equal -1. (unless one line is horizontal and the other vertical)
3x+2y=5
2y=5-3x
y=(-3/2)x+(5/2)
3x+2y=9
2y=9-3x
y=(-3/2)x+(9/2)
The two lines are parallel, since both slopes are equal to (-3/2).
Wiki User
∙ 14y ago
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