Question

Plot the points A(7,1), B(-2, 3), C(1, -7) on the coordinate axes below. State the

Answer 1

      A             B

D              C

vectors

AB = DC

AB (-2-7 ; 3-1) => AB (-9 ; 2)

DC (1-x : -7-y)

1 - x = -9 => x = 10

-7-y = 2 => y = -9

D(10 ; -9)