Question

I need help! Look at the picture for the problems

Answer 1

Question one is 0.1

Answer 2

i need some proof just to make sure

Answer 3

@mathstudent55

Answer 4

@KendrickLamar2014

Answer 5

@TheSmartOne

Answer 6

Bring the equations in this form:
y=ax^2. a will be your answer.

Answer 7

for what number 1 or 2?

Answer 8

No I meant the variable 'a' in the equation y=ax^2 will be your answer. Not the option a. Sorry for the confusion.

Answer 9

Its okay

Answer 10

The equation is 7y=.28x^2 though on number 1. I answered with .28 and I got it wrong last time.

Answer 11

For example, in question 1:
0.1y = 3x^2. When we convert it to the form I was saying we get"
y= (3/0.1) x^2. Now 3/0.1 is your constant of variation. Now try question 2 again with this method, you will get the right answer

Answer 12

OHHHHHHHHH its that easy?!!?!?!? wow thanks a lot my teacher failed to mention that

Answer 13

No problem. So, just to be sure, what did you get for question 2?

Answer 14

so its .01/3 or 3/.01? just making sure you typed it right

Answer 15

Nope, I typed it right :) Basic idea is, there should be no numbers next to y. You need to find what is the constant that drives the value of y dependent on x.

So, move everything tied to y over to x side. Now whatever constant is left next to x^2 is your constant of variation.

For question 1, it will be 3/0.1 = 30. Try question 2.

Answer 16

okay for question 2 I got 0.04

Answer 17

(btw i need it in decimal format not fraction)

Answer 18

Thats exactly right! 0.28/7 = 0.04

Answer 19

this one

Answer 20

ok fairly straight forward. f(x) = ax^2. Now plug in the value of x as 6, and equate the equation to 144 to find the value of a. You will have your expression.

Answer 21

so g(x)=24x^2

Answer 22

Thats not correct. Just solve this equation for a:
\[a \times x ^{2} = 144\]

Answer 23

and forgot to mention, plug in x = 6

Answer 24

im confused now

Answer 25

hmm sorry to confuse you. Let me try this way:
144 = a*x^2
144 = a*6^2
144 = a*36
a = 144/36
a = 4

Any clearer?

Answer 26

yes, much thanks you!

Answer 27

No problem.

Answer 28

Could you check my answer?