Question 187407
3x-8y=-18
-8y=-3x-18
y=-3x/-8-18/8
y=3x/8-9/4 (red line)
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32x+12y=-18
12y=-32x-18
y=-32x/-12-18/-12
y=8x/3+3/2 (green line)
the slopes are: 3/8 & 8/3 which says they are neither parallel nor perpendicular.
{{{ graph( 300, 200, -6, 5, -10, 10, 3x/8 -9/4, 8x/3 +3/2) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 3x/8 -9/4 and 8x/3 +3/2).