f(x) = kx + b
1) f(2) = 2k + b
2k + b = 7
2) f(3) = 3k + b
3k + b = 12
__________
k = 5
2 * 5 + b = 7
b = 7 - 10 = - 3
ответ : k = 5 ; b = - 3
f(x) = kx + b
1) f(2) = 2k + b
2k + b = 7
2) f(3) = 3k + b
3k + b = 12
__________
k = 5
2 * 5 + b = 7
b = 7 - 10 = - 3
ответ : k = 5 ; b = - 3