Question 184557
x-4y=-2
-4y=-x-2
y=-x/-4-2/-4
y=x/4+1/2 (red line) slope=1/4
y=9x-4 (green line) slope=9
These 2 lines are neither parallel nor perpendicular.
{{{ graph( 300, 200, -6, 5, -10, 10, x/4 +1/2, 9x -4) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions x/4 +1/2 and 9x -4).