Răspuns:
Explicație pas cu pas:
f(x) = ax + b
E(6; -9) inseamna x = 6 si y = -9
M(-8; -10) inseamna x = -8 si y = -10
-9 = 6x + b
-10 = -8x + b
b = -9 - 6x
-10 = -8x -9 - 6x
-10 + 9 = -14x
-1 = -14x
x = 1/14 = +1/14
b = -9 - 6/14 = -9 - 3/7 = -63/7 - 3/7 = -66/7
f(x) = (+1/14)x - 66/7
