<h2>I'm still in algebra 1 right now(due to the corrupt Math curriculum, I'm supposed to be in Geometry) and I need help on these problems. (Could be quite easy for some older people here) Please help and thanks:</h2>
<p>Write an equation or inequality that tells whether each point is inside or outside of the circle with a radius of 10 and centered at (0,0).</p>
<p>a.) (6,8) b.) (7,7) c.) (-7,-7) d.) (-6,8) e.) (-7,8) f.) (-7,-8)</p>
<p>Hint: try playing with the Pythagorean Theorem.</p>
<p>^^^Okay thanks for the tip, I was suspecting that.I just didn't know what to do.</p>
<p>You could always try the distance formula from the origin to the point.</p>
<p>Didnotfaillife???? I have no clue what that formula is.... May I ask what is it?</p>
<p>d = √[(x<em>2 -* x</em>1*)^2 + (y<em>2 - y</em>1)^2] </p>
<p>, where the underscores indicate a subscript.</p>
<p>Now I'm just confused... :(</p>
<p>Hah, trust Chaos to get that one...</p>
<p>You don't have to use it. Using the Pythagorean Theorem would yield the same answers.</p>
<p>The PT would be the only thing I can do... But can someone just tell me how to do it so I can write an equation or whatever?</p>
<p>The distance formula is the same as pythagorean theorum, just made to confuse people.</p>
<p>Oh. Please a simple way to get my answer?</p>
<p>Are u not allowed to graph it? I'm math illiterate and thats wut I do.</p>
<p>Wow, thanks iin77, I never realized that. That makes it a lot easier to memorize.</p>
<p>There's no equation given to graph... Please help</p>
<p>Do you live near Portland? Eugene? Such a beautiful state, that Oregon.</p>
<p>yes there is. You learn these things more fluently in Alg. 2 for some reason I promptly forgot it in Alg. 1. The center is (0,0) correct? any conic section w/ a center of (0,0) is X squared + y squared = blank (in your case 10 squared) I hope that helps. Its the distance formula simplified.</p>
<p>Well, since it's a circle of radius 10, the only way a point can be located in it is if it is a distance of 10 or less from the center of the circle. So the hypotenuse of a triangle with sides x and y must be less than or equal to ten. Using the Pythagorean Theorum, sqrt(x^2 + y^2)<=10.</p>
<p>That's it.</p>
<p>And you're welcome, colincsl.</p>
<ol>
<li><p>You don't need an equation. Just get a piece of graph paper, make a point. Count 10 squares from it. Draw a circle. Then draw axes, and plot the points.</p></li>
<li><p>equation would be x^2 + y^2 = 100</p></li>
</ol>
<p>I assume you can't use polar coordinates? :D</p>
<p>Haha fizix...don't scare the Alg. 1 kids...</p>