find x and y if (X , 7.8)=(10, X+Y).

(X1,Y1)=(X2,Y2), where their x-coordinates and y-coordinates must be same.

so, X = 10 

and X + Y = 7.8

Y=7.8 - X= 7.8 - 10= -2.2 

  • -1

it is in the form of :- 

(X1,Y1)=(X2,Y2)    , where their x- coordinates and y-coordinates must be same !!

so, X must be = 10 

and X+Y must be = 7.8

=>  Y=7.8 - X= 7.8 - 10= -1.2 

  • -6
What are you looking for?