You can't.
The slope of a line tells you the inclination of the line. It tells you how the tilts and by how much. If all you know is the slope, it can be any line of an infinite number of parallel lines. To be able to graph a single specific line, you need the slope and at least one point of the line.
Oh, sorry. I thought they wanted a specific graph. They want any graph as long as it has the given slope. This is what you do. Choose any point on the coordinate plane.
Now use the slope to find a second point. Let's say the slope is 4/3. To find a second point, start at your chosen point. Go up 4 units vertically and go 3 units to the right horizontally. That is your second point. Now connect the points and extend the line.
