Question

determine a função afim de F(x) =ax+b sabendo que: F (2) =10 e F (5) =4

Answer 1

f(x) = ax + b

f(2) = a.2 + b
f(2) = 2a + b
10 = 2a + b

2a + b = 10
____________________________________
f(5) = 4
f(5) = ax + b
f(5) = a.5 + b
f(5) = 5a + b
4 = 5a + b

5a + b = 4