anonymous
  • anonymous
Please Please someone help. Last question to a 5 part assignment I've been trying to finish. Below is a graph that represents the total profits for a third month. Write the equation of the line that represents this graph. Show your work or explain how you determined the equations. Graph of line going through ordered pairs (0, 300) and (450, 0)
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Find the slope by using rise over run then use point slope form
anonymous
  • anonymous
How do I do that?
anonymous
  • anonymous
@Shalante

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anonymous
  • anonymous
since x is higher on the 450 x2 becomes 450 x1 becomes 0 y2 become 300 y1 become 0 Slope is rise over run m=y2-y1/x2-x1 where m is the slope After you find slope, tell me
anonymous
  • anonymous
300/450
anonymous
  • anonymous
@Shalante
anonymous
  • anonymous
0-300=-300 So the slope is -300/450 You have to reduce it so its -2/3 m=-2/3 The point slope form is y-y1=m(x-x1) or y-y2=m(x-x2) either one works then bring the y1 over the right side
anonymous
  • anonymous
which one is y and which one is y1
anonymous
  • anonymous
im confused
nerdyotter
  • nerdyotter
(y1) is the value used for the y value you are replacing. So, if you had an example ordered pair of, (5,7), the equation would be [y-7 = m(x-5)], adding the slope to whatever equation you have.
anonymous
  • anonymous
y-0=-2/3(x-450)
nerdyotter
  • nerdyotter
So, if you understand rise over run, first find the slope of the two points, then use point slope form to substitute in your x, y, and slope values. An easy formula for finding slope in a two-dimensional coordinate plane is... \[\frac{ y2 - y1 }{ x2 - x1 }\]
anonymous
  • anonymous
im still confused
anonymous
  • anonymous
distribute it
anonymous
  • anonymous
what do i do next
anonymous
  • anonymous
how do i do that?
anonymous
  • anonymous
distributing by multiplying the paranthese for example 6(a-b) 6a-6b
anonymous
  • anonymous
y-0=-2/3x-450
anonymous
  • anonymous
like that^
anonymous
  • anonymous
no you multiply the -2/3 by 450 which equals -300 so its y=-(2/3)x+300
anonymous
  • anonymous
ok and then what do i do?
anonymous
  • anonymous
thankyou by the way for helping me
anonymous
  • anonymous
That is the equation. You are done.
anonymous
  • anonymous
wow that wasnt that hard. so in the future all i do is find the slope, then do that other formula and then distribute?

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