Im in algebra 1 and i dont really get it and i need help to learn this stuff!!!
2007-02-14 17:19:49 · 6 answers · asked by i_heart_you1269 1 in Education & Reference ➔ Homework Help
about inequality's!!
2007-02-14 17:32:16 · update #1
Well,I shall be really happy if I am of any help to you.you may write to me in details through yahoo Answers .
2007-02-14 20:30:17 · answer #1 · answered by alpha 7 · 0⤊ 0⤋
Alright I'll help you the best I can.
If there is an inequality such as this (x>2 or x<5) what you do is you graph them on a line. *Let's use x>2* Now, it says x is greater than 2. So when you graph it on a line, what you're really doing is saying that it is greater than any number more than two. So what you do is you put a dot above 2 on the line, and then you draw an arrow to the right, indicating that it is greater than any number greater than two.
Another thing about graphing x>2 is that there is no line under the greater-than symbol. If there is NO line and you are graphing, you put a CIRCLE above 2, not a dot. You ONLY put a dot if the symbol is greater than or equal to (a greater than with a line under it!!!)
Ok, pay attention to this because it's important. Let's use two examples (y>x+2 AND y<2x-2) Now, if you have an inequality with two variables (x and y) then you graph it on an XY plane because it's a line. But there's a difference here because not only is it a line it's an inequality.
Here's how you graph an inequality. It's just like graphing a plain line but with a few differences. The 1st difference is the less than/greater than signs. Just like with the dots, if a >< sign does NOT have a line under it, the line you draw for the equation is DOTTED like this - - - - - -. If the >< has a line under it, you draw a solid black line. The 2nd difference is that when you graph an inequality, there's more you do after you graph it. Let's use y>x+2. When you graph this as a LINE (like I said earlier) the first thing you do is draw the line as dotted right? because it doesn't have a line under the > sign. Second thing you do is this: The sign is GREATER THAN, so what you do is you shade in the area of the graph that is ABOVE (greater than sign = above the line) where the line intercepts the y intercept (which is 2 in y>x+2). Then you graph the other equation and shade the area BELOW the line. The area shaded that both have in common is your solution. Hope this helped!!!! Good luck!!!!
2007-02-15 09:26:39 · answer #2 · answered by KBub 3 · 1⤊ 0⤋
Two websites that may help you. The second one has a message board where they discuss algebra - in fact you might just find the answer you need.
2007-02-15 02:38:20 · answer #3 · answered by Silly Girl 5 · 0⤊ 0⤋
I would be happy to help in any way that I could.
2007-02-15 02:14:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
What do you need help with?
2007-02-15 01:29:49 · answer #5 · answered by Vivek 1 · 0⤊ 0⤋
hmmmmmm
2007-02-15 01:34:07 · answer #6 · answered by cool _ sim 2 · 0⤊ 1⤋