Question

NO CLUE HOW TO DO THIS. Given that (-9,3) is a point on the graph of f(x), find the corresponding point of the function f(-3x)

Answer 1

helppppp

Answer 2

y = f(x)

Answer 3

well i am on another problem and the points are 5,-4 and on the graph of f(x) and its saying find the corresponding points for -1/4 f(x). So would i start by putting -4=1/4f(x) ?

Answer 4

the two points on the line are (-9,3) & (5,-4)
is that right?

Answer 5

no those are two separate problems. I couldn't figure out the other one so i guessed and now am on this one: Given that (5,-4) is a point on the graph of f(x), find the corresponding point of the function -1/4f(x).

Answer 6

it only gives one point on the line, 5,-4

Answer 7

hmm, is it -1 / ( 4f(x) ), or -(1/4)f(x).

Answer 8

-(1/4)f(x)

Answer 9

ok, so (x,y) is (5,-4)

y = f(x)

substitute to find the value of
-(1/4)f(x)

Answer 10

-4=f(5) ???

Answer 11

well, that ^ is not false,
but it's not what i mean,

what is y equal to at the point?

Answer 12

-4

Answer 13

yes so sub this into

-(1/4)f(x)

Answer 14

-(1/4)f(-4)

Answer 15

like this...
-(1/4)[-4]
the just multiply them

Answer 16

1

Answer 17

Yeah!

Answer 18

so then what do i do from there one point is 1 how do i find the other just substitute 5 in to f(x)?

Answer 19

you have the same x=5

-(1/4)f(5) = 1

Answer 20

the point (x,y) is ... (5,1)

Answer 21

thank you!

Answer 22

but how do you get 5(-1/4)=1 ??