The slope of the inverse function f^-1(x) for f(x) = (-5/7)x - 3 is indeed -7/5. This conclusion can be verified by graphing the function and observing its reflection over the line f(x) = x. The constant term -3 does not affect the slope of the inverse. The discussion confirms that understanding the relationship between a function and its inverse is key to determining slopes. Overall, the slope of the inverse function is accurately identified as -7/5.