Question

Someone help me? :)

Answer 1

Which function is shown on the graph below?

a. y= √2x-6-1
b. y= √2x+6+1
c. y= √2x-6+1
d. y= √2x+6-1

Answer 2

Sub x = 3,5 and 11, you are able to get the function.

Answer 3

So like 2x3+6-1?

Answer 4

im sorry i dont understand..

Answer 5

What I meant is take each function sub the value in. Example :x=3 ; sqrt(2(3)-6+1) and x=5 ; sqroot(2(5)-6+1 etcc. Use the answer you got and match with the graph shown.

Answer 6

Hope u understand what I meant this time. ;)

Answer 7

How was it?

Answer 8

i dont :(

Answer 9

In your answer choices, does the square root cover the entire expression or just the 2x?

Answer 10

It covers the first two numbers. Not the last one. Thats why i had a problem with this question

Answer 11

Omg sqroot the whole expression my fault

Answer 12

oh no its okay! i must not have explained it right.

Answer 13

As Thomas pointed out, from the graph we can get three good points:
(3,1) ; (5,3) and (11,5)

Sub x = 3, 5 and 11 and see which choice gives you 1, 3 and 5 respectively.

Answer 14

Thats the part i dont understand to well.

Answer 15

How can I post a photo here?

Answer 16

New to this website

Answer 17

Attach file at the bottom

Answer 18

We want to find the curve that has the points (3,1) ; (5,3) and (11,5)
Try choice a) y= √(2x-6) - 1
put x = 3, y = sqrt(2*3 - 6) - 1 = -1 This is not it. We want y=1 when x=3

Try choice b), c) and d) like that for all three points.

Answer 19

K nvm I do it here ;

As what Ranga mentioned we need to find a good point to use it as our value for sub;

X = 3 , 5 and 11 is a good to find the function.

Example :
x=3; sqroot (2 (3) - 6 ) + 1= 1
X=5 ; sqroot ( 2(5) - 6) + 1= 3 etc.


Try do x = 11.

Answer 20

i got the answer D

Answer 21

Nope. If u use d, sub x. = 3 the answer you got 2.4 and your graph shown that when. X=3 is less than 2. Therefore is wrong

Answer 22

Sorry I using iPad so there may be some typo error

Answer 23

how was it? did you get the answer?