I was working out fhe normal to a curve from my further maths revision guide, and I was fine until I got to the answer. The revsion guide gave the answer as y+5=-1/4(x+2) or y=-1/4x-11/2 I got the y+5=-1/4(x+2) but can't understand how it could become y=-1/4x-11/2? Am I just being really dumb? I'll attach a picture of the question in the revision guide, the answer in the revision guide, and my working out in case that can help any. Thanks!
(It's question 1, and sorry the working out is messy)
if you expand the right hand side you get y+5=-1/4x-1/2 then if you want y on its own you have to take away five, to make it easier to understand I will take away 10/2 which is 5. so y=-1/4x-10/2-1/2 which is y=-1/4x-11/2
if you expand the right hand side you get y+5=-1/4x-1/2 then if you want y on its own you have to take away five, to make it easier to understand I will take away 10/2 which is 5. so y=-1/4x-10/2-1/2 which is y=-1/4x-11/2
Ah thankyou, I realise where I've gone wrong, I was trying to minus a quarter from two.