Question

How do I solve this?

Answer 1

Answer:

The other end point is $(-3,5)$

Step-by-step explanation:

For two points $(x_1,y_1)$ and $(x_2,y_2)$

The mid point$(x,y)=((x_1+x_2)/2,(y_1+y_2)/2)$

For the mid point  $(x,y)=(-1,1)$

and $(x_1,y_1)=(1,-3)$

$(x_2,y_2)=?$

$(-1,1)=((1+x_2)/2,(-3+y_2)/2)$

$(1+x_2)/2=-1\\\\1+x_2=-2\\\\x_2=-2-1\\\\x_2=-3$

And

$(-3+y_2)/2=1\\\\-3+y_2=2\\\\y_2=2+3\\\\y_2=5$

So, the other end point is $(-3,5)$