rearrange into standard form: first add 2y to each side:
3x -2y + 2y = 12 + 2y --> 3x = 12 + 2y
Then subtract 12 from each side: 3x - 12 = 12 + 2y - 12 ---> 3x - 12 = 2y
next divide both sides by 2: (3/2)x - (12/2) = (2/2)y
(3/2)x - 6 = y
so y = (3/2)x -6
in y = mx + b, with m as slope and b as y-intercept, so slope(m) is 3/2 = 1.5
also the line intersects the y-axis at y = -6
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-5
3x - y = 12 is the same as 3x - 12 = y, or y = 3x - 12.
Flat slope is slope equals zero.
23
It's the equation of a straight line, with a slope of (6/7) and a y-intercept of (-12/7).