Question that pisses e off

[khalil]

man.. i've been trying to question for 3 hrs..still didn't get the answer....

-ax^4
the graph has been dilated by a factor of 2 parallel to the y axis and then translated h units to the left
the graph is now translated 1 unit upwards and as a result cuts the y axis at y=-3
if the curve passes through the point (-2,-3)
find the equation of the curve

[Flaming_Arrow]

our points are  (0,-3) and (-2,-3)





yeilds



or like TrueTears answer 

[TrueTears]

(x,y) -> (x,2y) -> (x-h,2y) -> (x-h,2y+1)

so x = x'-h

and y = 2y'+1

solve for x' and y'

x' = x+h and

sub these in



now create 2 simultaneous equations using the info given ie the graph passes through (0,-3) and (-2,-3)

sub these in yields

  ...[1]

...[2]

solve for a and h yields a = 2 and h = 1

so equation is

you can solve for y which yields

[Flaming_Arrow]

(x,y) -> (x,2y) -> (x-h,2y) -> (x-h,2y+1)

so x = x'-h

and y = 2y'+1

solve for x' and y'

x' = x+h and

sub these in



now create 2 simultaneous equations using the info given ie the graph passes through (0,-3) and (-2,-3)

sub these in yields

  ...[1]

...[2]

solve for a and h yields a = 2 and h = 1

so equation is

you can solve for y which yields

we both answered the same question xD

[TrueTears]

lol yeah haha

[khalil]

Thanks guys but why cant i do i get an unknown result when i simplify the equations?
using  -ah^4=-2 and -a(h-2)^4=-2