# How do you rearrange this function using algebra?

• March 10th 2009, 08:15 PM
tashnatjuly
How do you rearrange this function using algebra?
these are the 2 functions

Demand: p= 50-5/6Qd

Supply: P= 5/4Qs -10

1a) invert the functions to the form Q=f(P)

i don't know how to do this, i know it is a basic question but i struggle with algebra!

thanks so much in advance :)
• March 10th 2009, 08:24 PM
Quote:

Originally Posted by tashnatjuly
these are the 2 functions

Demand: p= 50-5/6Qd

Supply: P= 5/4Qs -10

1a) invert the functions to the form Q=f(P)

i don't know how to do this, i know it is a basic question but i struggle with algebra!

thanks so much in advance :)

For demand : $p=50-\frac{5}{6}Qd$

$
Q=\frac{300-6p}{5d}
$

For supply : $p=\frac{5}{4}Qs-10$

$Q=\frac{4p+40}{5s}$