First, we need to find the equation for this line.
We know that :
- the slope is -3/4
- the line passes through (1,3)
Use the point-slope formula to determine the equation for the line.
[tex]\sf y-y_1=m(x-x_1)[/tex]
[tex]\sf y=3-\cfrac{3}{4}(x-1)[/tex]
Now, here's a graph of this line (I used desmos):
