A function f is defined by f (x) = 2x –5. Write down the values of
(i) f (0), (ii) f (7), (iii) f (–3).
Given: f (x) = 2x –5
(i) f(0) = 2× 0 – 5
= 0 -5 = -5
(i) f(7) = 2× 7 – 5
= 14 -5 = 9
(i) f(-3) = 2× (-3) – 5
= -6 -5 = -11