Question

considere a funçao f(x)= -3x+ b. sabendo que f(1)= 11, calcule b

Answer 1

11 = -3.1+b
11 = -3+b
11+3=b
b=14

Answer 2

$f(x) = -3x+b\\\\ f(1) = -3(1)+b\\\\ 11 = -3+b\\\\ b = 11+3\\\\ \boxed{b=14}$