y is directly proportional to x2.(adsbygoogle = window.adsbygoogle || []).push({});

x is increased by 100%.

Find the percentage increase in y.

so,

y=k x2

y= k (100 + x2)

then i went to find the k,

which is

k= y/ (100 + x2)

so i put back the k which i found into y= k (100 + x2)

which is :

y= y/(100 + x2) (100 + x2)

them im stuck here..:yuck:

somebody pls helppp!

thanks lotsa.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Find the percentage increase in y

**Physics Forums | Science Articles, Homework Help, Discussion**