Question

@jim_thompson5910 could you help me out with this one?
Given that (9,3) is on the graph of f(x), find corresponding point for the function -2/3f(x)

Answer 1

tell me what you got

Answer 2

If you're still stuck, then use the idea that

if any point (x,y) is on f(x)

then the point (kx, ky) is on k*f(x) for any value of k

Answer 3

Well, I'm confused because on the other one the value was after the "f(x)" and in this one it's before...

Answer 4

look at my hint and that should help somewhat

Answer 5

ohh okay! yeah, let me see what I can do

Answer 6

would it be (9,-2) ?

Answer 7

Or should I multiply both of the given points?

Answer 8

oh I apologize, I wrote the rule wrong

if any point (x,y) is on f(x)

then the point (x, ky) is on k*f(x) for any value of k

-------------------------------------------------------

So in this case

x = 9
y = 3
k = -2/3

giving us

(9,3) is on f(x)

so (9, (-2/3)*3) ---> (9, -2) is on (-2/3)*f(x)

so you are correct, nice work

Answer 9

so you got it right and you do only multiply the y coordinate with -2/3

Answer 10

oh okay, haha yeah I noticed you did.
But you still helped A WHOLE LOT!
Thank you once again(:

Answer 11

sure thing, glad to be of help