00:01
Okay, so we given a formula for a supply curve as 100 plus 20p.
00:16
Okay, so basically to rewrite that expression is a function of price, quantity is a function of price, 100 plus 20p.
00:29
To get the inverse of this is to make p subject of the formula.
00:34
We want to find out if we can make p subject to the formula what would need to do.
00:41
Obviously, the first thing is to subtract 100 from both sides.
00:47
So you're going to have q minus 100.
00:50
They should be equal to 20p.
00:52
I normally just like making the subject of the formula on the left side of the equal sign.
01:02
So i just need to re -ex to transpose the function 20p is equal to q minus 100...