Question

PLEASE HELP ME I WILL GIVE MEDAL AND FAN!!!!

Answer 1

@ganeshie8

Answer 2

what do you need help with ?

Answer 3

Identify which table shows a direct variation.

Table 1
x y
2 2
6 12
9 18

Table 2
x y
2 14
6 42
9 63


A.
Table 1

B.
Table 2

C.
Table 1 and Table 2

D.
Neither table

Answer 4

PLEAE HELP ME!!

Answer 5

how did you get that??

Answer 6

direct variation : \(\large y = kx\)

Answer 7

Look at the second table :
Table 2
x y
2 14
6 42
9 63

Answer 8

see any relation between numbers in "second column" numbers and "first column" ?

Answer 9

why our replies are dancing back and forth... :/

Answer 10

what do Y adn K and X stand for?? I have know idea what Direct Variatino is

Answer 11

PLEASE!

Answer 12

I would love to know what direct variation is and how to figure it out??? Thank you!

Answer 13

please help me!!!

Answer 14

Table 2
x y
2 14
6 42
9 63


for example,
y = kx :
14 = 2*7
42 = 6*7
63 = 9*7

Answer 15

any \(y\) value can be obtained by multiplying the corresponding value by \(7\)
so, this relation is of form : \(\large y = 7x\)
its a direct variation.

Answer 16

For table 1, you cannot write like that.
so table 1 is NOT a direct variation.

Answer 17

ok cool! So can you explain it to me again? What exactly is Direct VAriation?

Answer 18

https://www.khanacademy.org/math/algebra/algebra-functions/direct_inverse_variation/v/direct-and-inverse-variation

Answer 19

that short video... does a better job, go thru it quick :)

Answer 20

What is the value of y when x = 20?
Equation y = 5.2x. Over top of a table with column 1 heading x and values 0, 1, 10, 20 and column 2 heading y and no values showing.

A.
10.4

B.
25.2

C.
100.4

D.
104

Answer 21

I am thinking that i have no clue well what about i dont knonow

Answer 22

you're given the equation : \(\large y = 5.2x\)
plugin \(x = 20\)

Answer 23

\(\large y = 5.2 * 20 = ?\)

Answer 24

ok so 104

Answer 25

yup !

Answer 26

The equation y = 11x shows that a boat travels at a speed of 11 km/h.

Which ordered pair satisfies the equation y = 11x?

A.
(0, 11)

B.
(1, 12)

C.
(2, 22)

D.
(11, 1)
Thanks!!!

Answer 27

so if 11 equils Y then i woudl just do 11 times the number that we think of

Answer 28

kindof yes, u need to test each option

Answer 29

\(\large y = 11x\)

lets test first option :
A.
(0, 11)


plugin x = 0,
do u get 11 ?

Answer 30

ok then i guesss yeah

Answer 31

because no wait 0*11=0

Answer 32

\(\large y = 11x\)

plugin x = 0

\(\large y = 11*0 = 0\)
so NOPE, this is not equal to 11, so its not a solution

Answer 33

so no

Answer 34

D because 1*11

Answer 35

YEAH I FEEL SMART!!!

Answer 36

thats a very good try, but no :)

Answer 37

D is not the answer

Answer 38

oh

Answer 39

D.
(11, 1)
x y


plugin x = 11, do u get 1 ?

Answer 40

what do the comas mean like * or /??

Answer 41

y = 11x = 11*11 = 121
so, D is not the answer.

Answer 42

(x, y)

Answer 43

ok so

Answer 44

its called an ordered pair,
first number is x, second number is y

Answer 45

try option C

Answer 46

ok so what about how did you get that?

Answer 47

C.
(2, 22)


y = 11x

plugin x = 2,
wat do u get ?

Answer 48

ok i got 22

Answer 49

nice thanks!

Answer 50

yes ! which is same as the y value in (2, 22)
so option C satisfies the given equation.

Answer 51

i will post another question!

Answer 52

Find the discount.

regular price = $100; discount rate = 35%

A.
$350

B.
$35

C.
$3.50

D.
$65

Answer 53

how do you get the discount rate?

Answer 54

B

Answer 55

Correct !

35% of 100 = 0.35*100 = 35

Answer 56

Find the discount.

regular price = $168; discount rate = 30%

A.
$117.60

B.
$162.96

C.
$50.40

D.
$5.04

Answer 57

so what we would do woudl be 0.30 Times 168?

Answer 58

You got it !!

Answer 59

\(\large 30\% = \dfrac{30}{100} = 0.3\)

Answer 60

YEAH!!

Answer 61

to calculate the discount amount, simply multiply 0.3 by the regular price

Answer 62

The regular price of an item is $35. The item is on sale with a discount of $10.

What is the discount rate?

A.
0.286%

B.
28.6%

C.
35%

D.
286%

Answer 63

i dont know how to do it opposite??

Answer 64

divide both, then multiply by 100 :

\(\large \dfrac{10}{35}\times 100\)

Answer 65

ok so B

Answer 66

B is right !!!
I gotta go.... brb in 1 hour... cya :)

Answer 67

ok cool! Thank you!