Question

If (-1, y) lies on the graph of y = 22x, then y =

Answer 1

in this orderd pair (-1,y) what is the value of x ?

Answer 2

@Bonka14 can you answer me ?

Answer 3

I have no clue thats what I'm trying to figure out..

Answer 4

okay an ordered pair is always respresented as (x,y)
and here you have (-1,y) what is x ?

Answer 5

Im not sure but my answer choices are -4, 1/4, or 1

Answer 6

is that all the problem
If (-1, y) lies on the graph of y = 22x, then y =
or is there something else ?

Answer 7

Yes that all it says but the problem is If (-1, y) lies on the graph of y = 2^2x, then y = is what?
-4
1/4
1

Answer 8

If just realized on the problem it didn't put the "^" sign.

Answer 9

okay so I'm gonna help you with this one
you have (-1,y) then x=-1 (because an ordered pair is represented as (x,y))
and you have this point (-1,y) lies on the graph of y=2^2*x
so all you have to do is to put the value of x in y=2^2*x
is it clear ?

Answer 10

So i multiply the x by the -1?

Answer 11

no you put instead of x its value

Answer 12

oh okay so it would be -1

Answer 13

Right..

Answer 14

NO wait thats not right.

Answer 15

so your answer is :

Answer 16

1? o_O

lol im so confused.

Answer 17

okay slowly
(-1,y) ----> x=-1
is it clear til here ?

Answer 18

Yes so far so good

Answer 19

Ohh okayy so Would it be -4?

Would that be my answer..

Answer 20

okay, this point (-1,y) belongs to the graph of y=2^2*x
so it satisfies it's equation
is that clear ?

Answer 21

yes.

Answer 22

good
to simplify things, what is a graph ; it contains all the points that satisfies it's equation
for example y=2^2*x
if x=0 ----> y=2^2*0=0
if x=1-----> y=2^2*1=4*1=4
if x=2-----> y=2^2*2=4*2=8
did you got it ?

Answer 23

Oh okay yes i did thank you!!(:

Answer 24

so can you give now the anwser of your question

Answer 25

1/4

Answer 26

first do you have \[y=2^2x\] or something else?

Answer 27

@Bonka14

Answer 28

no..

Answer 29

what is the expression then can you draw it ?

Answer 30

is it \[y=(2^2)^x\]