3x-2y=4 is in standard form. 
• A point-slope equation would look something like this: y-y1=m(x-x1)
• Slope-intercept looks like this: y=mx+b 
 - m stands for slope, b stands for y-intercept (y-intercept is where the line passes through the (0, y)
• Rise-run is just the slope which looks like: slope=rise/run. 
 - attached picture is example (sorry it's a little messy because I used pen and I know I probably didn't need to explain this much into detail but... ) 
I hope this helps!