b)
[tex]\it{Gf\cap Ox =M(x, 0)} [/tex]
[tex]\it{M(x, 0) \in Gf \Leftrightarrow f(x)=0\Leftrightarrow 6x+2=0\Leftrightarrow 6x=-2 \Leftrightarrow x=-\dfrac{2}{6} \\\;\\
\Leftrightarrow x= -\dfrac{1}{3}}[/tex]
[tex]\it{Deci, \ \ \ Gf \cap Ox =M\left(-\dfrac{1}{3}, 0\right).} [/tex]
[tex]Gf \cap Oy = P(0, y)
\\\;\\
P(0, y) \in Gf \Longrightarrow f(0)= y \Longrightarrow \ 2=y \Longrightarrow y=2\\\;\\
Deci,
\\\;\\
Gf \cap Oy = P(0, 2)
.[/tex]
