Suppose the slope of a weight-vs-length graph for a spring gives 70 N/m, and the x-intercept is 0. Also, the spring begins to stretch immediately...

Suppose the slope of a weight-vs-length graph for a spring gives 70 N/m, and the x-intercept is 0.30 m. Also, the spring begins to stretch immediately when you add weights to it. What is the length of this spring when 7.0 N are added to the end of it? Answer in meters. The length of this spring will be ______ m.