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y in (-oo:+oo)
1/8 > (-3/4)*y-(3/8) // - (-3/4)*y-(3/8)
1/8-((-3/4)*y)+3/8 > 0
(3/4)*y+1/8+3/8 > 0
3/4*y+1/2 > 0 // - 1/2
3/4*y > -1/2 // : 3/4
y > -1/2/3/4
y > -2/3
y in (-2/3:+oo)
(-2/3:+oo)
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