中点 (-3,-6),(1,4)

解答

中点

(- 3, - 6), (1, 4)

(- 1, - 1)

求解步骤

(x_{1}, y_{1}), (x_{2}, y_{2})

的中点:

(\frac{x _{2} + x _{1}}{2}, \frac{y _{2} + y _{1}}{2})

(x_{1}, y_{1}) = (- 3, - 6), (x_{2}, y_{2}) = (1, 4)

= (\frac{1 - 3}{2}, \frac{4 - 6}{2})

整理后得

= (- 1, - 1)

r an g e - 2 x^{2} + 2 x - 4

in t erce pt s 3 x^{2} - 14 x + 15

sy mm e t ry (x - 4)^{2} = 24 (y + 3)

in v erse f (x) = \frac{6}{3 - x}

in v erse f (x) = \frac{x - 1}{x + 4}