中点 (-3,1),(-1,-1)

解答

中点

(- 3, 1), (- 1, - 1)

(- 2, 0)

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

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

整理后得

= (- 2, 0)

g l o ba l x^{2}

d o main \frac{2}{x - 2} - 8

s l o p e in t erce pt y - 7 = - \frac{5}{2} (x + 6)

a sy m pt o t es - x^{3} + 3 x^{2} + 10 x

in v erse f (x) = \frac{8 x - 1}{3 x + 7}