First of all, you know that the x-intercept is 7 and the y-intercept is −6. In addition, by knowing this you can now figure out the equation of this line.
Furthermore, you now have two points you can work with (7,0 and 0,−6). To add on, as your next step you will have to find the slope of the line which you can figure out by finding the rise over the run;y2−y1x2−x1
Therefore, your y2 would be 0 (which comes from the point 7,0) and your y1 would be −6 (which comes from the point 0,−6), thus when you subtract −6 from 0 you get a result of +6.
In addition, your x2 would be 7 (which comes from the point 7,0) and your x1 would be 0 (which come from the point 0,−6), thus when you subtract 0 from 7 you get 7.
So, now that you have the numbers 6 and 7 all you have to do is divide them so that you get the fraction 67. In continuation, from this you can now write the equation of the line which would be 67x(the slope) minus 6 (which is the y-intercept).
This is a demonstration of how the graph would look like;
graph{6/7x-6 [-7.65, 12.35, -8.15, 1.85]}
67x−6