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samnatha
Group Title
using the same axsis and scales graph the functions f(x)=x and g(x)= 2x  3
 2 years ago
 2 years ago
samnatha Group Title
using the same axsis and scales graph the functions f(x)=x and g(x)= 2x  3
 2 years ago
 2 years ago

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mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
Make a table of values for each function. To do that, come up with some values for x and calculate f(x) and g(x) f(x) = x x  f(x)  2  2 1  1 0  0 1  1 2  2 Use the above points to graph f(x). Then do the same for G(X)
 2 years ago

Aperogalics Group TitleBest ResponseYou've already chosen the best response.0
@samnatha r u there?????/
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
yes sorry was just tying to work it out
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
i then have to solve x =  2x3
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
is anyone there ?
 2 years ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
No. You don't need to solve that equation. Just make two tables of points and graph both on the same xy graph
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
oh ok thanks theres another one which is 2x3 < x
 2 years ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
Sorry, I misread your post. When you said you have to solve x = 2x  3. I thought you meant that you needed to solve that to get the graph. After you graph both f(x) and g(x on the same graph, see where the graphs intersect. That's the solution tox = 2x  3
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
ok thanks i got that bit but i'm not too sure on the second bit
 2 years ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
dw:1353697888667:dw
 2 years ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
The soulition to x = 2x  3 is where the two graphs intersect. There are two points.
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
(1,1) and (3.5, 3.5) thats what i got on my graph is that right ?
 2 years ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
The solution to 2x  3 < x is the x values for which the value of g(x) is less than the value of f(x). If you look in graph, see where the y vaslue of g(x) is lower than the y value of f(x).
 2 years ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
I think it's (1,1) and (3,3)
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
ok my graph is probs a bit diff but thanks for your help :)
 2 years ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
You're welcome
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
god the pressures of leaving cert math
 2 years ago
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