Ms-Brains
  • Ms-Brains
Can somebody please show me how to solve this, and check if my answers are correct in a few questions? I will medal!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Ms-Brains
  • Ms-Brains
Vocaloid
  • Vocaloid
y = mx + b m is your slope b is the y intercept
YoungStudier
  • YoungStudier
@jabez177

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More answers

Ms-Brains
  • Ms-Brains
So it would be A then? @vocaloid
Vocaloid
  • Vocaloid
yeah
Ms-Brains
  • Ms-Brains
How about these sort of problems?
Vocaloid
  • Vocaloid
same thing
Ms-Brains
  • Ms-Brains
But where does the 1 part come from?
Vocaloid
  • Vocaloid
x = 1*x
Vocaloid
  • Vocaloid
like, when we have a variable with no coefficient, the implied coefficient is 1
Ms-Brains
  • Ms-Brains
Oh okay, so this one would be D then..?
Vocaloid
  • Vocaloid
yeah
Ms-Brains
  • Ms-Brains
Ms-Brains
  • Ms-Brains
I think it's B..
Vocaloid
  • Vocaloid
hm, not B, let's take it step by step
Vocaloid
  • Vocaloid
if one orchid costs r dollars, then 11 orchids cost 11*r, with me so far?
Vocaloid
  • Vocaloid
still there?
Ms-Brains
  • Ms-Brains
Yeah, sorry I was called away.
Ms-Brains
  • Ms-Brains
Yeah, I'm with you still
Vocaloid
  • Vocaloid
good, it also says they bought 1 vase for 4 dollars, so our total cost is 11r + 4
Ms-Brains
  • Ms-Brains
Okay,
Vocaloid
  • Vocaloid
it says that C represents cost, so any ideas on what the answer is?
Ms-Brains
  • Ms-Brains
D. C=11r + 4
Vocaloid
  • Vocaloid
good ^^ any other questions?
Ms-Brains
  • Ms-Brains
Yeah, two more c:
Ms-Brains
  • Ms-Brains
I'v always had trouble with problems like these ;-;
Vocaloid
  • Vocaloid
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
Vocaloid
  • Vocaloid
*actually divide everything by 9, not 3
Ms-Brains
  • Ms-Brains
So solve 3x + 9y =18, right? x=6-3y
Vocaloid
  • Vocaloid
you kind have the right idea, but you want to "solve" for y, not x
Vocaloid
  • Vocaloid
so you want to get y by itself
Ms-Brains
  • Ms-Brains
y = 6-3 / 3 y = 5
Vocaloid
  • Vocaloid
uh, not quite, let's start over
Vocaloid
  • Vocaloid
3x + 9y =18 just divide everything by 9, that gives us: (1/3)x + y = 2, with me so far?
Ms-Brains
  • Ms-Brains
Yeah
Vocaloid
  • Vocaloid
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
Ms-Brains
  • Ms-Brains
Oh. Okay, I get.
Ms-Brains
  • Ms-Brains
Last one
Vocaloid
  • Vocaloid
we do the same thing we did before -4x + 6y = 12 start by dividing everything by 6 and tell me what you get
Ms-Brains
  • Ms-Brains
I get C. 2/3
Ms-Brains
  • Ms-Brains
@Vocaloid
Vocaloid
  • Vocaloid
yeah that's right, good job
Ms-Brains
  • Ms-Brains
Yay, Thank you for the help :3

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