勾配 (11/8 ,-1/2),(1/4 , 1/4)

解

勾配

(\frac{11}{8}, - \frac{1}{2}), (\frac{1}{4}, \frac{1}{4})

m = - \frac{2}{3}

解答ステップ

2点間の傾斜: 傾斜

= \frac{y _{2} - y _{1}}{x _{2} - x _{1}}

(x_{1}, y_{1}) = (\frac{11}{8}, - \frac{1}{2}), (x_{2}, y_{2}) = (\frac{1}{4}, \frac{1}{4})

m = \frac{\frac{1}{4} - ( - \frac{1}{2} )}{\frac{1}{4} - \frac{11}{8}}

改良

m = - \frac{2}{3}