Answer: C
Step-by-step explanation:
1) Only step: Solve for all options.
A
[tex]f(x)=3y[/tex]
[tex]f(x)=3(4)[/tex]
[tex]f(x)=12[/tex]
[tex]12\neq 2[/tex]
A is false!
B
[tex]f(x)=2y[/tex]
[tex]f(x)=2(4)[/tex]
[tex]f(x)=8[/tex]
[tex]8\neq 2[/tex]
B is false!
[tex]f(x)=\frac{y}{2}[/tex]
[tex]f(x)=\frac{4}{2}[/tex]
[tex]f(x)=2[/tex]
[tex]2=2[/tex]
C is true!
[tex]f(x)=\frac{y}{3}[/tex]
[tex]f(x)=\frac{4}{3}[/tex]
[tex]\frac{4}{3} \neq 2[/tex]
D is false!
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