\(f\left( { - 5} \right) = \dfrac{3}{4}.\left( { - 5} \right) = - \dfrac{{15}}{4}\)
\(f\left( { - 4} \right) = \dfrac{3}{4}.\left( { - 4} \right) = - 3\)
\(f\left( { - 1} \right) = \dfrac{3}{4}.\left( { - 1} \right) = - \dfrac{3}{4}\)
\(f\left( 0 \right) = \dfrac{3}{4}.0 = 0\)
\(\displaystyle f\left( {{1 \over 2}} \right) = \dfrac{3}{4}.\dfrac{1}{2} = \dfrac{3}{ 8}\)
\(f\left( 1 \right) = \dfrac{3}{4}.1 = \dfrac{3}{4}\)
\(f\left( 2 \right) = \dfrac{3}{4}.2 = \dfrac{6}{4} = \dfrac{3}{ 2}\)
\(f\left( 4 \right) = \dfrac{3}{4}.4 = 3\)
\(f\left( a \right) = \dfrac{3}{4}a\)
\(f\left( {a + 1} \right) = \dfrac{3}{4}.\left( {a + 1} \right) = \dfrac{{3a + 3}}{4}\)
