Question

If a+b= -1 ,and a-b= 3 then find the coordinates ( ab )

Answer 1

Answer:

(a,b)=(1,-2) is the correct answer

Step-by-step explanation:

a+b=-1. ------------1

a-b= 3 --------------2

adding eqn. 1 and 2 we get,

a-b= -1

+a+b= 2

---------------

2a = 2

a=1

substitute a=1 in eqn 1

a+b= -1

1+b= -1

b= -1-1

b= -2

therefore a,b = 1,-2