You can put this solution on YOUR website! you know your slope is . This will be the coefficient of the x-variable in the equation.
You also know that the y intercept is 7. What does this mean? It means that when x=0, y=7.
So basically all this graph is the equation y=x moved up 7 spaces.
so we have y=x+7. Note that when x=0. y=(0) + 7 = 7, just as we wanted.
The graph looks like this: