It would be easiest to convert to slope intercept form. In order to do this, you have to isolate y.
3x + 2y = 29
2y = 29 - 3x
y = #-3/2x# + #29/2#
With this equation, you know the y intercept (#29/2#) and the slope (#-3/2#). In a slope intercept form equation, the slope will always be the value with the x coefficient and the intercept the constant term (the number that stays the same). With this information you can graph the line.