Write your equations in the form y = rx + s
Where r is saying something on the direction of the line.
The same r, so the same direction (parallel)
r1 x r2 = -1 then perpendicular
Try now!
y = 3/8 x + 14/8 r1 = 3/8
y = -32/12 x - 15/12 => y = -8/3 x - 5/4 r2 = - 8/3
r1 * r2 = ?
3/8 * -8/3 = -1
Perpendicular!
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