Question

Помогите решить 171 и 174

Answer 1

171
у = 2х - 7

1) х = 2х - 7
х = 7
(7; 7)

2) -х = 2х - 7
х = 7/3
(7/3; -7/3)

х = -2х - 7
х = -7/3
(-7/3; 7/3)


174
y = kx - 10, M(4; 2)
2 = 4k - 10
k = 3