中点 (1,-19),(1,9)

解答

中点

(1, - 19), (1, 9)

(1, - 5)

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}) = (1, - 19), (x_{2}, y_{2}) = (1, 9)

= (\frac{1 + 1}{2}, \frac{9 - 19}{2})

整理后得

= (1, - 5)

d o main \frac{2 ( x + 6 )}{3 x}

s im pl i f y (- 1.1) (- 4)

d o main f (x) = 169 - x^{2}

l in e y = - 2

s l o p e 5 x + 2 y = 9