8. Three point-like charges are placed at the following points on the x-y system coordinates (q1 is fixed at x = -1.00 m, q 2 is fixed at y = +1.00 m, and q3 is fixed at x = +3.00 m. Find the electric potential at y = -2.00 m. Let q = -1.40 C, 92 = -3.80 C, and q3 = +5.20 C. V. y(m) O +3 +2 +1 +1 1 -2 --3 + +2 +3 -x(m)