Question

Solve the following system of equations by using the elimination method.

x - y = 11
2x + y = 19

(1, 10)
(-1,-1)
(12,2)
(10,-1)

Answer 1

the answer is (6, 1)

Explanation:

x² + y² - 12 x - 2 y + 12 = 0

(x²-12x) +(y² -2y) +12 = 0

(x²-2(6)(x)+6²)-6² +(y² -2y+1) -1+12 = 0

(x-6)² +(y-1)² = 5²

the center of a circle is (6, 1)