draw serkel with senter=(7,-5) & radius=12 & find weer . . . it hit y-axis....ie weer x=0 . . . 2 points...form rite triangels, base=horizontal line from senter . . . base leng=7 . . . triangel diagonal....leng=12 . . . . hav vertikal side along y-axis...leng=sqroot(144-49) . . . leng=sqroot(95)=9.746794345 . . . points on y axis: (0, 4.746794345) & (0, 14.746794345)