Answer:
A linear function: f: R ---> R, f(x) = ax + b;
f(3) = -1 <=> 3a + b = -1;
f(5) = -4 <=> 5a + b = -4;
Then, b = - 1 - 3a;
We obtain 5a + (-1-3a) = -4;
5a - 1 - 3a = -4;
2a - 1 = -4;
2a = -3;
a = -3/2;
b = - 1 + 9/2;
b = 7/2;
f(x) = (-3/2)x + 7/2;
Step-by-step explanation:
