1. y=x-1
y= -x + 3
Solve the system of linear equations by graphing

Step-by-step explanation:

Well, you have to draw a graph and I can't do that on here. First, draw the lines by plotting two points that fall on each of them. For the first equation, you can use the points (4,3) and (7,6). You could use (6, -3) and (9, -6) for the second equation. After you have your points, draw the line between them. The point of intersection, where the lines cross, is the solution to the system.

a² + b²= c²

24² + 7² = c²

c= 25