People born in the year of Rabbit should be matched with sheep, dogs, and pigs, so that they can achieve success, live and work in peace and contentment, and build their families through patents. People born in the Year of the Dragon should be matched with the Rat, Monkey, and Rooster. They will have good luck, get a good marriage, be diligent and thrifty, and have a prosperous life, wealth and success, and descendants.
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Master Ta (寇抠\wei／?: 6 1 4 8,8 6, 7)
(1) The analytical formula of the parabola: due to A (-3, 0) , point B is symmetric about x=-1, so B(1,0), and
C(0,-2), bring in y=ax^2+bx+c to get y=2 /3x^2+4/3x-2.
(2) Make the auxiliary line AP. Obviously AP is equal to BP, because △APB is an isosceles triangle. Therefore, the perimeter of △PBC is equal to AP+PC+CB, and CB is a constant, so as long as AP+PC is the smallest, it is enough. Obviously, the straight-line distance between points A and C is the shortest, so we only need to find the intersection line between AC and the axis of symmetry at x=-1.
The equation of the straight line passing through AC is
y=-2/3 (x+3). When x=-1, y=-4/3.