To solve the exponential equation by graphing, we first have to create two functions. Each side of the given equation will become a function. 1−55−x=-9⇒y=1−55−xy=-9 The solution to the equation is the x-value where the two graphs intersect.
From the diagram, we see that the graphs intersect at x≈3.5. This is our best guess approximation. If we limit the diagram's x-axis around the point of intersection, we can get a better approximation.