Question

Let f(x) = 3x - 4 and x1 and x2 be any constant in (negative infinty,infinty) that satisfy the condition x1 < x2. What do you need to show to prove f is increasing on (negative infinty,infinty)?
a. f(x1) > f(x2)
b. f(2) > f(4)
c. f(x1) < f(x2)
d. f(2) < f(4)
e. f is actually decreasing

Answer 1

since x1<x2
in order for the function to be increasing u need to show that
f(x1)<f(x2)