college algebra
posted by debbie on .
Identify where f increases and where f decreases. f(x)=5x+3
I think it's (3,5) increases and (3,2) decreases?

F increases when x is positive and F
decreases when x goes negative.
F(x) = 3x + 3.
F(2) = 3*2 + 3 = 9. (3,9).
F(2)=3*(2) + 3 = 6 + 3=3. (2,3).