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automaticloveletter
 one year ago
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
automaticloveletter
 one year ago
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

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triciaal
 one year ago
Best ResponseYou've already chosen the best response.0one 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
 one year ago
Best ResponseYou've already chosen the best response.1@triciaal I'm confused

ChillOut
 one year ago
Best ResponseYou've already chosen the best response.1We 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
 one year ago
Best ResponseYou've already chosen the best response.1Moving on... "b", the "y intecept" is 2 as we can see from graph dw:1437427126952:dw

ChillOut
 one year ago
Best ResponseYou've already chosen the best response.1So... 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 \[\frac{ 42 }{ 50 }=\frac{ 2 }{ 5 }\] 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
 one year ago
Best ResponseYou've already chosen the best response.1And we will have \[\frac{ 2 }{ 5 }*7 +2=\frac{14}{5}+2 = \frac{24}{5}=4.8 cm\]

ChillOut
 one year ago
Best ResponseYou've already chosen the best response.1All right then. If you need any help I'll be back later. Just ask ;)

ChillOut
 one year ago
Best ResponseYou've already chosen the best response.1Oh, and in my first response it should be "m" is given by dy/dx. major mistake there by me.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0@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
 one year ago
Best ResponseYou've already chosen the best response.1@triciaal Yeah, well I got it now. Thanks anyways.
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