Question

If the coordinates of two points A and B are (– 10, 5) and (6, 9) respectively, then the difference of X and Y, where X equals to the sum of abscissas of A and B and Y equals to the sum of ordinates of A and B, can be equal to

Answer 1

( X, Y )

abscissa : x coordinate

ordinate : y coordinate

A ( – 10 , 5 ) B ( 6 , 9 )

According to question

X = – 10 + 6

X = – 4

Y = 5 + 9

Y = 14

X – Y = – 4 – 14

X – Y = – 18