graph both functions to find the solution(s) to the system. {f(x)=x+1

g(x)=x^2−6x−7

Not sure if you just need the x value, but the two solutions are (-1, 0) and (8, 9). Just plug these two equations into a graphing calculator and it's easy to see the two intersection points

Hope this helps!

Thanks, Lag....

Here is the graph...https://www.desmos.com/calculator/tarsovokoa

The solutions are as Lag said....!!!