Question

function f is defined by the formula f (x)) = ax + b. if f (-1) = 2 and f (1) = 8, determine the function formula f!

Answer 1

Answer:

f(x)=3x+5

Step-by-step explanation:

given f(-1)=2

so -a+b=2

and f(1)=8

so a+b=8

solving equations we have a=3 and b=5

hence f(x) = 3x+5