In the relationship y=3x, if x is reduced by 1/3, how will y change?

Answer 1

Hi Antonio!

If you reduce x by 1/3, "y" will be reduced by 1/3.

Why? Because "Y" is the dependent variable. It depends on X. If X grows larger, "Y" grows larger by the same proportion.

Example: y=3x

27=3(9)

If we reduce 9 by 1/3 we have

18=3(6)

As you can see 6 is 1/3 smaller than 9, therefore, 18 is 1/3 smaller than 27.

I hope this helps.