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y=2/3x+4
Do you mean 4x-3y = 12 then it is at (3, 0)
2y= 3x+6
Without an equality sign it's no kind of any equation but if you mean 3y=12 then y=4
If you mean: 6x+3y = 12 then it is y = -2x+4 in slope-intercept form
If you mean: 6x+3y = 12 then it is y = -2x+4 in slope-intercept form
None because without an equal sign it's not an equation but some kind of an algebraic expression.
If you mean: -4x+3y = 12 then y = 4/3x+4 whereas 4/3 is the slope and 4 is the y intercept
If you mean: 6x-3y = 12 Then: -3y = -6x+12 And: y = 2x-4 So: the slope is 2 and the y intercept is -4
If you mean: 2x+3y = 12 then y = -2/3x+4 whereas -2/3 is the slope and 4 is the y intercept
The equation has been distorted in the question (as usual on this site). The general idea is to solve the equation for "y"; read off the slope from the resulting equation; then divide minus 1 by this slope to get the slope of the perpendicular line.
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc. Also use ^ to indicate powers (eg x-squared = x^2).