Question

refresh my memory?

Answer 1

(x,y) represents that g(x)=y

Answer 2

-1 means inverse

Answer 3

For example, \(g(4)=-5\), so \(g^{-1}(-5)=4\)

Answer 4

so g^-1 (6) = 9

Answer 5

well done :)

Answer 6

would h^-1 be : -2x-9 ?

Answer 7

nope :)

Answer 8

Try to make x the subject of \(h(x)=2x+9\) :)

Answer 9

x = 9/2?...

Answer 10

ok in other words make \(x\) the subject of \(y=2x+9\) :)

Answer 11

subject?

Answer 12

that means \(x=...\)

Answer 13

isn't it x = 9/2?

Answer 14

-9/2

Answer 15

almost...

Answer 16

hint: the inverse of \(j(x)=18x+67\) would be \(x=\dfrac{j(x)-67}{18}\) or \(j^{-1}(x)=\dfrac{x-67}{18}\) (The middle one is the step)

Answer 17

(I know your book doesn't teach you this way)

Answer 18

sorry xD .. its 2:31 am... okay so its (x-9)/2 ?

Answer 19

yep :)

Answer 20

Do you need to know the presentation?

Answer 21

Like are you preparing this for an exam that's not in the form of MC

Answer 22

no so h^-1 would be equal to = (x-9)/2

Answer 23

yes

Answer 24

what would be the other form?

Answer 25

No the other form is just an intermediate form so it's useless and will not be tested and is actually extra

Answer 26

ok

Answer 27

Here's what I do in my head: