Question

State whether or not each equation or situation represents direct variation.

xy = –11

To make hummingbird food, mix cup of sugar with 1 cup of water.

y = 2x - y

The circumference of a circle with radius r units is C units.

The cost of a ticket for the subway is $2 to go anywhere in the subways system.

y = -6x + 6

Answer 1

yes or no stuff please

Answer 2

do you know what is direct variation

Answer 3

A direct variation is a linear equation that can be written in the form y = kx, where k is a nonzero constant. The number k is called the constant of proportionality or constant of variation. Graphically, we have a line that passes through the origin with the slope of k.

Answer 4

snow please

Answer 5

Okay, altho i'll tell you, i'm typing with one hand so i might be a little slow

Answer 6

ok

Answer 7

Direct variation is using f(x) =mx+b in this instance
So, those that are linear, are direct variations
you do know what a linear equation is, right?

Answer 8

mx+b ?

Answer 9

ye

Answer 10

But now I'm confused.... is it only linear equations or just any f(x) thing...

Answer 11

supie, your on, help?

Answer 12

I could be wrong,
but i thought that direct variation was \(y=kx\)
you plug in y and x then solve for k

Answer 13

Wdym plug in x and y?

Answer 14

it's just yes or no question's

Answer 15

ik




@az

Answer 16

hm ok then @vocaloid maybe...?

Answer 17

He keeps posting the same questions again and again but he never responds to the posts to complete the questions

Answer 18

you came to life

Answer 19

I've answered this question TWICE already but we've never gotten past the initial reply

Direct variation is
y = kx

Indirect variation is
xy = k

The graph of a direct variation will be going through (0, 0) and will be a linear line. It's y-intercept is at the origin.

Answer 20

it's yes or no az

Answer 21

\(\color{#0cbb34}{\text{Originally Posted by}}\) @b1az3
it's yes or no az
\(\color{#0cbb34}{\text{End of Quote}}\)

I know that but you still never respond so that we can answer your questions

Answer 22

so your first one

xy = -11

does that look like a direct variation or an indirect variation?

remember examples of direct variation would be like
y = 5x

an example of indirect variation would be
xy = 4

Answer 23

Silence... once more... at the front lines

Once we get through the first question, then only can we blaze (pun intended) through the rest of your questions on that page

Answer 24

\(\color{#0cbb34}{\text{Originally Posted by}}\) @b1az3
it's yes or no az
\(\color{#0cbb34}{\text{End of Quote}}\)
Your not gonna get a yes or no answer we have to explain our reason for the answer

Answer 25

@b1az3

Answer 26

LMAO

Answer 27

Lmaoo

Answer 28

\(\color{#0cbb34}{\text{Originally Posted by}}\) @AZ
@b1az3
\(\color{#0cbb34}{\text{End of Quote}}\)
Beautiful