Remember that slope intercept form is y=mx +b. The key is to make that equation look like the slope intercept form. So first, you would subtract 3. 3X-3X cancels out and then you bring the 3X all the way where 20 is. Since 20 and 3X are not like terms, you are left with 4y=3x+20. (I got the plus sign because 20 is positive). You divide 4 from 3 and 20. Your final answer is going to be: y=4/3x+5.