Explanation:
We meet again
The top one, the solution would be where it intersects, so it would be (4,2)
Example 1: you would graph the first line, with a slope of one, at a y intercept at -8. You would then graph the second line with a slope of negative 2 at a y-intercept at 1. Then you would check where they intersect, which would be at (3,-5) which is the answer. I attached what the graphs would look like
Example 2: do the same thing as example one. Line one has a slope of 1/2 and a y-intersect at 9. line two has a slope of -1 and a y-intersect at 6. Answer should be at (-2,8) I attached the graphs below too.