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anonymous
 one year ago
Solve the problem, If f(x)= x3A/3x+5 and f(3)=6. what is the value of A?
anonymous
 one year ago
Solve the problem, If f(x)= x3A/3x+5 and f(3)=6. what is the value of A?

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2this is f(x), right? \[\Large f(x) = \frac{x3A}{3x+5}\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2\[\Large f(x) = \frac{x3A}{3x+5}\] \[\Large f(3) = \frac{33A}{3(3)+5}\] \[\Large 6 = \frac{33A}{3(3)+5}\] \[\Large 6 = \frac{33A}{14}\] \[\Large 14*6 = 14*\frac{33A}{14}\] \[\Large 84 = 33A\] \[\Large A = ??\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2In step 2, I replaced every x with 3 In step 3, I replaced f(3) with 6 (since f(3) = 6)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so I got A= 27

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1433980377815:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Use the accompanying graph of y=f(x) to sketch the graph of the indicated equation. Graph one transformation in each coordinate system.

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2f(x) means you reflect over the y axis 2*f(x) means you scale vertically, or stretch vertically, by a factor of 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How would I show this on the coordinate plane?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2start by reflecting each point over the y axis

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it would be (2,2) and then? what?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2do the same for the other points as well

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1433981229533:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1433981248199:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2imagine this happens to all of the points

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2you'd get something like this dw:1433981278828:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and then? how would I do the second part?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2the 2* out front means you double each y coordinate

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2ex: (2,2) > (2,4)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2ex: (2,2) > (2,4) dw:1433981434340:dw imagine this happens to EVERY point

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so I would show this for each point!

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2and the overall graph

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright awesome thank you!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Before you leave! :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0If they ask me for which of the following values of x does f(x)=20 and the graph is showing :dw:1433981600730:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2draw a horizontal line through y = 20 dw:1433981843252:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2then determine where that horizontal line crosses the curve

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(25,15), (15,0), (0,15) , (10,20) , (15,10), (20,10) and (25,0)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0those are the points they provide!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I know that 20 and 10 both have f(x)=20

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2hint: y = f(x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How would I determine the answer?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2another hint: each point is of the form (x,y)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Would I say {20,10}

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This is all I could think of!

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2(20,10) means x = 20

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2but they say f(x) = 20

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OKAY,,,, maybe I put it wrong? (20,20) and (10,20)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2just look through the points (25,15), (15,0), (0,15) , (10,20) , (15,10), (20,10) and (25,0) where the y coord is 20

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2y = f(x) f(x) = 20 y = 20

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so all I would say is (10,20) correct?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2yes that is the only point that fits the description

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay... and sorry one last thing I PROMISE!!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0iF I HAVE THE SAME coordinate plane but with different points and it is 20 instead of 25 and they ask for what numbers x is f(x)<0?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How would I write this?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It starts with 12 I know this but would it be [12,1]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2can you post a screenshot of the full problem?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1433982828860:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The graph of a function f is given. Use the graph to answer the question. (20,12) , (12,0) , (0,12) , (8,16) , (12, 8), (16,8) and (20,0)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0For what numbers x is f(x)<0 ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2look at the points where the y coord is negative

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1433983055819:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay and they cant be greater than 0 correct?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2yeah because you said f(x) < 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Right so how would I say this?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2they just want you to list points?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OKay so in this case it would be (12,0)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2if that's the case, then list any points with y coordinates less than 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It asks me For what numbers x is f(x)<0

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2what are the x intercepts of that graph

anonymous
 one year ago
Best ResponseYou've already chosen the best response.020 , 16, 12, 8, 4,0 4, 8, 12, 16 and 20

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1433983321114:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0on the far left its 12 and on the far right its probably 14 because its in between 12 and 16

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1433983408801:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1433983425459:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1433983449734:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 how would I write this?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2I think they just want the x values that correspond to when y is negative

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So would I write something like [12, 1]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2where are you getting 1?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0idk? I am guessing that this is correct? but I have no clue

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2the x intercepts are 12 and 14 the interval (12,14) represents the region when f(x) < 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OKay thank you! but wouldnt it have to be [ instead of ( ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2() because you don't include the points on the x axis

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OKay I got cha awesome thank you so so so much your amazing :D
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