Question

8) The graph of the equations 2 x - y - 4 = 0 and x + y + 1 = 0 intersect
each other in point P (a, b) then find the coordinates of P?



9) The solution of the equation a x + b y + 5 = 0 and b x - ay - 12 = 0 is
(2, -3)​

Answer 1

answers are in attachment with 8 and 9 question no

Answer 2

the 3 pictures are the answers of two questions.

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