"all points distans from (-2,-1)=13" is a serkel with radius=13
Then intersekt line: x=3
(x+2)^2 +(y+1)^2=13^2=169
evaluate at x=3
x+2 become 5, & yu get 5^2 +(y+1)^2=169
or (y+1)^2=169-25=144
so (y+1)=+-12
y=11, or y=-13
#### differ wae tu look at it...from senter tu x=3 =5=deltax
x^2 +y^2=13^2=169, & x=5
so (rad=13)^2=5^2+y^2
so y^2=13^2-5^2=169-25=144
so deltay=12
start from senter at y=-1, so 2 points=12-1 & (-1-12)=-13