Graphing quadratic equations.

Does ANYBODY get it and if you can please help me. I have a math assignment due tomorrow and I'll be royally fucked if I don't graph these damn bloody things.

 

Haha! I remember those days! I haven't done math since last year, and won't need to do it again until second semester sophmore year! I rock!


But, yeah...I don't remember them being to hard. Post a problem and I'll try and figure it out.

 

Simply.divide.your.denominator.by.the.recipricator.and.then.you.multiply.that.by.the.sum.of.your.quadratic.formulas.exponent.

 

Okay, it says

b) Draw the graph of each of the factored equations. (Choose x values from -10 to +10 and draw y axis from -15 to +10)

So, from A I factored y=9x(squared)-36x+35 and ended up with the factors (3x-7)(3x-5). I know I have to do a table of values, but I'm not exactly sure how to go through with that.

 

ya, i could possibly help......it starts as a porabola...do you have a graphing calc?

 

I'm sorry Loveee, but as much as that might all make sense to you its like a foreign language to my ears.

 

Pop your TI open... if you don't have one, tough shit. Math is easy, use the textbook.

 

Okay, I know what a porabala looks like but I don't know how to get there, and no I don't have a graphing calculator unfortunately.

 

TIs are the best... unfortunately, the public school that I went to was standardizing Casios... and my bio/chem teacher was a representative to TI... those things are great. Gotta love a PH Probe ... (or any other probes...)

 

Buy one.

 

My TI? Huh? Yeah, I'm afraid math is easy for some and not so easy for others. I don't have a textbook.

 

Buy one.

 

It's rather easy to say it... kinda late now. It's 10:36 pm and a good TI is about $120ish... so...

Hand it is and a 4 function if you have one, I suppose... I'm going to have to sleep in a bit as I have to get up around 5 and do psych. and ride my bike to the post office to mail in an exam... I get to see the sunrise and it's early... no people hmm... I just started doing parabolas and quadratics when I left public school.

 

To make a table of values you plug in values for x and hen solve for that, to the table will have the x values on one side, then put the respective y values on the other...use the two values to place points on a graph and go at it..

hope it helps

 

See, thats easy to say, but I can't snap my fingers and instantly have one right now. I just need it for tonight. I'm usually really good at math but this one took me by surprise seeing as I missed today at school. So, if somebody could, very simply, explain to me the process I would be forever grateful. Also, George, the animation on purple math is awesome. I'm sort of getting it.

 

hey moonlight, i posted just before you, check it out...

 

Google exists, use it.

 

I had a textbook but we never went by it...

Hmm... wow. This is... rather tough. I can't explain these types of things on here very well unless I'm doing them physically, then again, I don't know it all as well and math related things are usually my weakest... I'm more of a verbal/audio person as far as remembering things dealing with common sense, but I find it much easier when you don't have to argue a point with a teacher who doesn't understand.

 

Okay, let me rephrase my question.

I understand what a table of values is and how to plug things in, but what do I put in the y section. I am using the equation y=ax(squared)+bx+c, right? So what does that have to do with factored equations if you aren't going to use the factors?

 

wait, do you get the part about just using the quadratic equation itself?

Like, the -b+or-square root of a - c over 2b?

Or...something like that...