## Algebra 1

parallel: $y = 6x$ and $y = 6x-2$ perpendicular: $y = -1/6*x$ with $y = 6x$ and $y = -1/6*x$ with $y = 6x-2$
$y = -1/6*x$ has $m = -1/6$ $y = 6x$ has $m = 6$ $y = 6x-2$ has $m = 6$ If two slopes are the same, then they are parallel. If the product of two slopes is -1, then those two lines are perpendicular. $-1/6 * 6 = -1$, so there are two pairs of perpendicular lines. Those pairs are $y = -1/6*x$ with $y = 6x$ and $y = -1/6*x$ with $y = 6x-2$.