# Thread: Graphing inequalities minor problem..

1. ## Graphing inequalities minor problem..

I have completed every problem except this one, and the only problem i'm having is the start.. if i get it off the ground, i can probably finish it.
We are graphing inequalities, (y'know, draw the line, pick a point, prove/disprove, shade true area), and i have come to one that doesnt seem to have a line point. all the others had a +1 or -3 or +4 or something like that, but this one is just

y < 2x

am i supposed to just put in +0 for a starting point, or is there something more?
i have to go to bed now, so don't expect responses until morning, but i will log on to check and see what to do..it is, after all, due tomorrow in school! :P

2. Originally Posted by Nightfire
I have completed every problem except this one, and the only problem i'm having is the start.. if i get it off the ground, i can probably finish it.
We are graphing inequalities, (y'know, draw the line, pick a point, prove/disprove, shade true area), and i have come to one that doesnt seem to have a line point. all the others had a +1 or -3 or +4 or something like that, but this one is just

y < 2x

am i supposed to just put in +0 for a starting point, or is there something more?
i have to go to bed now, so don't expect responses until morning, but i will log on to check and see what to do..it is, after all, due tomorrow in school! :P
To draw the line y = 2x you need two points. Then you join them with a line. And yes indeed, one of those points is (0, 0).

To get another point, sub x = 1 into y = 2x: y = 2(1) = 2. So another point is (1, 2).

Plot both points and draw the line. Now decide which side of the line your inequality satisfies .....

Oh, how did I choose x = 1 to get the second point I hear you ask. I could've chosen any value of x. But x = 1 is real simple .....

3. Originally Posted by Nightfire
I have completed every problem except this one, and the only problem i'm having is the start.. if i get it off the ground, i can probably finish it.
We are graphing inequalities, (y'know, draw the line, pick a point, prove/disprove, shade true area), and i have come to one that doesnt seem to have a line point. all the others had a +1 or -3 or +4 or something like that, but this one is just

y < 2x

am i supposed to just put in +0 for a starting point, or is there something more?
i have to go to bed now, so don't expect responses until morning, but i will log on to check and see what to do..it is, after all, due tomorrow in school! :P