SOLUTION: I have to graph a semi-circle in quadrant II on a graphing calculator. What would be an example of an equation that I could use to do that? Any help would be GREATLY appreciatied.

Algebra ->  Formulas -> SOLUTION: I have to graph a semi-circle in quadrant II on a graphing calculator. What would be an example of an equation that I could use to do that? Any help would be GREATLY appreciatied.       Log On


   

Question 4866: I have to graph a semi-circle in quadrant II on a graphing calculator. What would be an example of an equation that I could use to do that? Any help would be GREATLY appreciatied. Thank you, Rebecca Daigle
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
A circle general equation is given by %28x-a%29%5E2+%2B+%28y-b%29%5E2+=+r%5E2 where centre is (a,b) and radius = r.

So, for second quadrant, you want a centre having negative x and positive y, lets pick (-4,4) and a radius of 1...keep it simple :-)

So, we get %28x-%28-4%29%29%5E2+%2B+%28y-%284%29%29%5E2+=+1%5E2 --> %28x%2B4%29%5E2%2B%28y-4%29%5E2=1%29

As for semi-circle, choose your bounds for printing on the graph as x between -3 and -4, so it misses out the other half (-4 to -5).

Ok?

jon.