Omnimaga
Calculator Community => TI Calculators => General Calculator Help => Topic started by: cnwinger on December 02, 2015, 09:13:41 pm
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I read the manual which tells me to choose:
Menu -> Graph Entry -> Equation -> Line
the problem is that 3 Line types available to choose all want to auto-fill in parts of the equation, which I cannot go back and edit. I don't see any possible way to enter the following:
2x – 3y + 12 = 0
What am I missing here?
Thanks…
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I read the manual which tells me to choose:
Menu -> Graph Entry -> Equation -> Line
the problem is that 3 Line types available to choose all want to auto-fill in parts of the equation, which I cannot go back and edit. I don't see any possible way to enter the following:
2x – 3y + 12 = 0
What am I missing here?
Thanks…
You can use simple algebra to rearrange it into something the Nspire can handle
2x - 3y + 12 = 0
2x + 12 = 3y
3y = 2x + 12
y = (2x + 12)/3
y = x*(2/3) + 4
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Oh, I assumed the nsprie could handle that. Thanks for the clarification.
So that is simple enough to get it down to that point (solve for Y)..but what are the steps to then enter that into the graph? I'm not sure which option to use.
I tried the function, but it only seems to want the X value.
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You want to use the function graphing.
The final input should look something like this: f1(x)= x*(2/3) + 4
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now I see. Thanks for your help!
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One more thing that is escaping me...isn't there a way to auto-display the x and y intercepts on a straight line?
I see I can get it to display the X intercept manually using the "zero" action. I don't know how to get the Y intercept.
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One more thing that is escaping me...isn't there a way to auto-display the x and y intercepts on a straight line?
I see I can get it to display the X intercept manually using the "zero" action. I don't know how to get the Y intercept.
You can find the y intercept of any equation by just replacing the x with 0 and solving for y, which in this case the equation is already solved for y.