(0,3). The graph of equation 2 (y = x + 7) is another straight line with a slope of 1 and a y-intercept of 7. This line also increases by 1 in the y-coordinate for every increase of 1 in the x-coordinate. It passes through the point (0,7). When we graph these two lines, they intersect at the point (4, 7). This is the solution to the system of linear equations. The graph shows that there is a unique solution to the system, as the two lines intersect at a single point.