## Mitchi35 one year ago I am now having a hard time with graphing a circle. I get the process of knowing how to get the coordinates, and the radius to graph it. It's just the graphing part that I am having a difficult time with. Help please?

1. Mitchi35

I need help with 1, and 5.

2. dakid88

Since the radius is 5, I can find my four points by moving 5 points in any direction?

3. dakid88

4. Mitchi35

That's a good question, but I have no idea. sorry.

5. Mitchi35

Or maybe i guess starting with the center points that are already given. Is where you could find the other points?

6. Nnesha

just substitute (h,k) for the center point into the general equation r is radius plot the center point radius would be the same for left/right/up/down|dw:1443802057472:dw|

7. Nnesha

|dw:1443802213761:dw|

8. Mitchi35

One sec. I'm tryin to understand what you just put.

9. Mitchi35

Alright well. Can you help me if it's not too much to ask on how to do question 5? It's a little different from question 1.

10. Nnesha

well the questions are the same difference is they already replace h,k with center point in first question

11. Nnesha

$\huge\rm (x-h)^2+(y-k)^2=r^2$ general equation center at (-4,2) r=5 sub (h,k) for (-4,2) and r for 5

12. Nnesha

|dw:1443803124096:dw| here draw a point at (-4,2)

13. Mitchi35

|dw:1443803216013:dw|

14. Mitchi35

ops. Meant to label it.

15. Nnesha

hmm (-4,2)

16. Nnesha

first number represent x-coordinate

17. Mitchi35

What? I did. Negative 4 and positive 2 right? On the graph the point should be there right?

18. Nnesha

no it's -4,2 not (2,-4) -4 is x 2=y

19. Mitchi35

Omg. Oohhhhh. Yeah. Should have warned you, math is not my forte. Obviously.

20. Nnesha

oh well you're pretty good 't it

21. Nnesha

|dw:1443804021187:dw|alright draw a point at (-4,2)

22. Mitchi35

|dw:1443804222203:dw|

23. Mitchi35

(-4,2)

24. Nnesha

right ! good now draw radius 5 unit up left /right and down|dw:1443804506829:dw| now we can draw a circle

25. Nnesha

5 units from the center up/down/left/right

26. Nnesha

make sense ? :=)

27. Mitchi35

Yes ma'am!/sir. Thank you very much!

28. Nnesha

np :=) good luck!

29. Hero

Find your four points on the circle, and the center point of the circle. Then use a protractor to draw the circle.