The dotted lines represent equipotential lines. So any point along each line will equal the voltage associated with it. In this case, point two is equal to point 1. They are both 50 V.

I have point 1 equivalent to 3,800 V/m (based off a total guess). I put the same answer in for point 2, however it says that it is wrong. I feel like I am getting the distance wrong. I understand where the points lay in the equipotential lines and their voltage. Using the equation E = V/r