Determine if the equation x2+y2−2x+4y−4=0x^2+y^2-2x+4y-4=0 is a circle, and if it is, find its center and radius.

Is a circle, center = c ( 1 , − 2 ) c\left(1,-2\right) , radius r = 3 r=3 .

Determine if the equation x2+y2−2x+4y−4=0x^2+y^2-2x+4y-4=0 is a c...

0. Review of Algebra4h 16m

1. Equations & Inequalities3h 18m

2. Graphs of Equations1h 31m

3. Functions2h 17m

4. Polynomial Functions1h 44m

5. Rational Functions1h 23m

6. Exponential & Logarithmic Functions2h 28m

7. Systems of Equations & Matrices4h 6m

8. Conic Sections2h 23m

9. Sequences, Series, & Induction1h 19m

10. Combinatorics & Probability1h 45m