Question

Can somebody please show me how to solve this, and check if my answers are correct in a few questions? I will medal!

Answer 1

y = mx + b

m is your slope
b is the y intercept

Answer 2

@jabez177

Answer 3

So it would be A then? @vocaloid

Answer 4

yeah

Answer 5

How about these sort of problems?

Answer 6

same thing

Answer 7

But where does the 1 part come from?

Answer 8

x = 1*x

Answer 9

like, when we have a variable with no coefficient, the implied coefficient is 1

Answer 10

Oh okay, so this one would be D then..?

Answer 11

yeah

Answer 12

I think it's B..

Answer 13

hm, not B, let's take it step by step

Answer 14

if one orchid costs r dollars, then 11 orchids cost 11*r, with me so far?

Answer 15

still there?

Answer 16

Yeah, sorry I was called away.

Answer 17

Yeah, I'm with you still

Answer 18

good, it also says they bought 1 vase for 4 dollars, so our total cost is

11r + 4

Answer 19

Okay,

Answer 20

it says that C represents cost, so any ideas on what the answer is?

Answer 21

D. C=11r + 4

Answer 22

good ^^ any other questions?

Answer 23

Yeah, two more c:

Answer 24

I'v always had trouble with problems like these ;-;

Answer 25

well, slope-intercept form, like I said before, is just y = mx + b

so let's copy down what we have:

3x + 9y = 18

start by dividing everything by 3

Answer 26

*actually divide everything by 9, not 3

Answer 27

So solve 3x + 9y =18, right?
x=6-3y

Answer 28

you kind have the right idea, but you want to "solve" for y, not x

Answer 29

so you want to get y by itself

Answer 30

y = 6-3 / 3

y = 5

Answer 31

uh, not quite, let's start over

Answer 32

3x + 9y =18

just divide everything by 9, that gives us:

(1/3)x + y = 2, with me so far?

Answer 33

Yeah

Answer 34

good, so we can rewrite that as

y = 2 - (1/3)x

which is the same as

y = -(1/3)x + 2

and that's our answer in slope intercept form

Answer 35

Oh. Okay, I get.

Answer 36

Last one

Answer 37

we do the same thing we did before

-4x + 6y = 12

start by dividing everything by 6 and tell me what you get

Answer 38

I get C. 2/3

Answer 39

@Vocaloid

Answer 40

yeah that's right, good job

Answer 41

Yay, Thank you for the help :3