Answer:
Considering it's a line you need two points.
So you can give x two random values,
for example 5 and 0.
You will get: y=-5*(5)+3
y=-25+3
y=-22. you have your first point: A(5,-22)
second point:
y=-5*(0)+3
y=3. you have your second point: B(0,3).
Draw the points on the Graph and the line that passes through the two points, which is one and only.