document.write( "Question 400179: what is the endpoint B(x,y)of segment AB if A is(0,-4) and the midpoint is (0,-2)? I don't really know how to do it I only know the midpoint formula. Thanks!! \n" ); document.write( "

Algebra.Com's Answer #283364 by Tatiana_Stebko(1539) $\"\"$ $\"About$

You can put this solution on YOUR website!
if A(x1,y1) B(x2,y2)then midpoint M(x,y)formula
\n" ); document.write( " $\"x=%28x1%2Bx2%29%2F2\"$ $\"y=%28y1%2By2%29%2F2\"$
\n" ); document.write( "In text A(0,-4) midpoint is (0,-2), put in formula
\n" ); document.write( "for x ... $\"x=%28x1%2Bx2%29%2F2\"$
\n" ); document.write( " $\"0=%280%2Bx2%29%2F2\"$
\n" ); document.write( " $\"%280%2Bx2%29=0\"$
\n" ); document.write( " $\"x2=0\"$
\n" ); document.write( "for y ... $\"y=%28y1%2By2%29%2F2\"$
\n" ); document.write( " $\"-2=%28-4%2By2%29%2F2\"$
\n" ); document.write( " $\"-4%2By2=-2%2A2\"$
\n" ); document.write( " $\"y2=-4%2B4\"$
\n" ); document.write( " $\"y2=0\"$
\n" ); document.write( "B(0,0) \n" ); document.write( "

\n" );