the graph is a negative and will therefore have a negative slope. to find the slope, pick a point on the graph and find the .
for instance, start with the point (0,1). Then go down 1 and left 2 to get to the next point on the graph (2,0). 1 is the "rise" and 2 is the "run" hence -1/2 being the slope.
Substitute first Y for the second Y So it would be x + x + 6 = -2 Then it would be 2x +6 = -2 Move the 6 over so it would be 2x =-8 Divide by 2 your answer is x = -4