they intersect at c) 2, -3.
if you look at the graph, look at the point the lines are intersecting at.
if you go down 3 points on the y axis and two points to the right on the x axis,
you will see the x and y values meet up at the line intersection point.
to check our work, we can plug the value (2, - 3) into both equations and see if they both make a valid equation. if they do, this shows that (2, -3) is a valid answer to both graphs.
y = 2x - 7
-3 = 2(2) - 7
-3 = 4 - 7
- 3 = -3
so, the point works for the first equation. what about the second?
y = -x - 1
-3 = -2 - 1
-3 = -3
so, it checks out and both equations fit the point (2, -3) so i am certain this answer is correct.