automaticloveletter
  • automaticloveletter
What would most likely be the approximate height of the plant after 7 weeks? 4.8 centimeters 14.4 centimeters 16.5 centimeters 19.5 centimeters
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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automaticloveletter
  • automaticloveletter
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triciaal
  • triciaal
one approach find the slope of the line change in y/ change in x slope is the same for any 2 points on that line using one of the points and (7, y) solve for y the height when x = 7
automaticloveletter
  • automaticloveletter
@triciaal I'm confused

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automaticloveletter
  • automaticloveletter
@ChillOut
ChillOut
  • ChillOut
We have a linear equation. The form of a linear equation is given by y= mx + b, where "m" is the angular coefficient and "b" the y intercept. "b" is given by \(\frac{ \Delta y }{ \Delta x }\)
ChillOut
  • ChillOut
Moving on... "b", the "y intecept" is 2 as we can see from graph |dw:1437427126952:dw|
ChillOut
  • ChillOut
So... now to find the coefficient "m". We need to use known points, and the easiest ones for that are (0,2) and (5,4). We do \(\frac{ \Delta y }{ \Delta x }\) and we have \[\frac{ 4-2 }{ 5-0 }=\frac{ 2 }{ 5 }\] Now we need to plug m and b in the equation... \[\frac{ 2 }{ 5 }x +2\] This is the equation for this line. After this, we plug 7 in the "x".
ChillOut
  • ChillOut
And we will have \[\frac{ 2 }{ 5 }*7 +2=\frac{14}{5}+2 = \frac{24}{5}=4.8 cm\]
ChillOut
  • ChillOut
Did you get it? :)
automaticloveletter
  • automaticloveletter
Got it
ChillOut
  • ChillOut
All right then. If you need any help I'll be back later. Just ask ;)
ChillOut
  • ChillOut
Oh, and in my first response it should be "m" is given by dy/dx. major mistake there by me.
triciaal
  • triciaal
@automaticloveletter you are confused on finding the slope of the line even after telling you it's the change in y / change in x ?
automaticloveletter
  • automaticloveletter
@triciaal Yeah, well I got it now. Thanks anyways.

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