Step-by-step explanation:
We need 2 things in order to write slope-intercept equations: the slope, and the y-intercept. Remember that the form is  , where
, where  is slope and
 is slope and  is y-intercept. All of the lines show the y-intercept, but not the slope. We can calculate slope using two points on the line and the slope equation,
 is y-intercept. All of the lines show the y-intercept, but not the slope. We can calculate slope using two points on the line and the slope equation,  .
.
 1.  Two points: (1,-3) and (0,4)

So the equation would be: 
2. Points: (-1,-2) and (0,1)

Equation: 
3. Points: (0,5) and (-2,4)

Equation: 
4. Points: (0,-2) and (-4,1)

Equation: 
Hope this helps!