# A function f is defined by f(x) = 2x – 5.

Question:

A function $t$ is defined by $t(x)=2 x-5$. Write down the values of

(i) $f(0)$,

(ii) $f(7)$,

(iii) $f(-3)$

Solution:

The given function is $f(x)=2 x-5$.

Therefore,

(i) $f(0)=2 \times 0-5=0-5=-5$

(ii) $f(7)=2 \times 7-5=14-5=9$

(iii) $f(-3)=2 \times(-3)-5=-6-5=-11$