Slope intercept form: y= mx +b 
Parallel lines= same slope
Find slope of this line first: 
2x + 3y =8 
Subtract 2x from left side and add it to right side. 
3y = -2x + 8
Divide by 3 
Y= -2x/3 +8/3
slope= -2x/3
Y= mx + b —-} b is y intercept which is unknown and m is slope 
Plug in -2/3x for slope.
Y= -2/3x +b 
To find y intercept plug in point (-2, 3) 
Y= -2/3x+b
3= -2/3(-2) +b 
3 = 4/3+b
3-4/3 =b
5/3 =b
Y= -2/3x +5/3 is new equation