functions

Question 1

making a sketch of a function

Answer 1

• form function, put in y=mx+c form
• TP is the inverse of what is in the bracket and the outside number
• finding where it cuts the y axis make x=0
• draw graph

Question 2

restrictions on a domain

Answer 2

• factorise bottom of fraction if there is
• sketch the factors
• state when it is more than 0

Question 3

inverse function

Answer 3

• make x the subject
• change x to f-(x)