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using the same axsis and scales graph the functions f(x)=x and g(x)= 2x  3
 one year ago
 one year ago
using the same axsis and scales graph the functions f(x)=x and g(x)= 2x  3
 one year ago
 one year ago

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mathstudent55Best 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)
 one year ago

AperogalicsBest ResponseYou've already chosen the best response.0
@samnatha r u there?????/
 one year ago

samnathaBest ResponseYou've already chosen the best response.0
yes sorry was just tying to work it out
 one year ago

samnathaBest ResponseYou've already chosen the best response.0
i then have to solve x =  2x3
 one year ago

mathstudent55Best 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
 one year ago

samnathaBest ResponseYou've already chosen the best response.0
oh ok thanks theres another one which is 2x3 < x
 one year ago

mathstudent55Best 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
 one year ago

samnathaBest ResponseYou've already chosen the best response.0
ok thanks i got that bit but i'm not too sure on the second bit
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.0
dw:1353697888667:dw
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.0
The soulition to x = 2x  3 is where the two graphs intersect. There are two points.
 one year ago

samnathaBest 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 ?
 one year ago

mathstudent55Best 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).
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.0
I think it's (1,1) and (3,3)
 one year ago

samnathaBest ResponseYou've already chosen the best response.0
ok my graph is probs a bit diff but thanks for your help :)
 one year ago

samnathaBest ResponseYou've already chosen the best response.0
god the pressures of leaving cert math
 one year ago
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