WILL GIVE 100 POINTS FOR ANSWERING CORRECTLY!

Answer:
[tex]\boxed{\tt f(x)=10x}[/tex]
Step-by-step explanation:
[tex]\tt (2,20),(3,30)....[/tex]
[tex]\tt m=\cfrac{30-20}{3-2} =10[/tex]
[tex]\tt y-20=10(x-2)[/tex]
[tex]\tt y-2=10x-20[/tex]
[tex]\tt y=10x[/tex]
[tex]\tt f(x)=10x[/tex]
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Slope:-
Equation in point slope form
Convert to f(x)
f(x)=10x