Answer:
So start at the y intercept which is -1 in this case becuase the point slope formula goes like 
y=mx+b
m= slope
b= y-intercept 
Y= Ranodm Y coordinate 
X= Random X coordinate 
You don’t have to worry so much about the x and Y, the main focus while graphing is the slope (m) and the y-intercept (y)
So -1 is the y-intercept so you go to -1 on the graph on the Y axis, it should be right below 0.
Now to make the points, the slope is -3/4
So a slope is written rise/run 
Rise is going up and run is going right 
-3 is the rise
4 is the run 
Since the slope is negative (due to having a negative on 1 side) 
We just do the opposite for the rise 
Go down 3 and go to the right 4.
There you have it 
Also for image reference