A quadrilateral \(JKLM\) with vertices \(J(-3,4)\), \(K(-4,3)\), \(L(1,-2)\), and \(M(1,1)\) is reflected in the \(y\)-axis to give the image \(J'K'L'M'\).

State the coordinates of \(J'\), \(K'\), \(L'\), and \(M'\).