Question 935649
I think you mean C.
Look at the change in x.
{{{DELTA*X=12-(-2)=14}}}
{{{DELTA*Y=9-1=8}}}
Multiply by {{{5/8}}} and add to B to get C.
{{{X[c]=12+dX=12+14(5/8)=83/4}}}
{{{Y[c]=dY=9+8(5/8)=14}}}