hello, i was wondering if anyone could help me with part c. im unsure how to do it without knowing the co-ordinates. the centre of the circle is (-2,3)

(edited 11 months ago)

Gather the x terms and y terms together and try your best to complete the square. Try to set your equation out like this:

(x+a)^2 + (y+b)^2=r^2

Where a and b are numbers

From this, you can find the coordinates

I like to make (x+a)=0 to find x, which will be your x coordinate. Do the same for (y+b) to find the y coordinate

These coordinates will be the centre of your circle

(x+a)^2 + (y+b)^2=r^2

Where a and b are numbers

From this, you can find the coordinates

I like to make (x+a)=0 to find x, which will be your x coordinate. Do the same for (y+b) to find the y coordinate

These coordinates will be the centre of your circle

(edited 11 months ago)

thank you this is what i did for part a. its just part c i cant get my head around!!

Original post by harlz_chalamet

Gather the x terms and y terms together and try your best to complete the square. Try to set your equation out like this:

(x+a)^2 + (y+b)^2=r^2

Where a and b are numbers

From this, you can find the coordinates

I like to make (x+a)=0 to find x, which will be your x coordinate. Do the same for (y+b) to find the y coordinate

These coordinates will be the centre of your circle

(x+a)^2 + (y+b)^2=r^2

Where a and b are numbers

From this, you can find the coordinates

I like to make (x+a)=0 to find x, which will be your x coordinate. Do the same for (y+b) to find the y coordinate

These coordinates will be the centre of your circle

Original post by izzy21234

thank you this is what i did for part a. its just part c i cant get my head around!!

Hint: What's the diameter of the circle?

Original post by _Boomerang

Hint: What's the diameter of the circle?

ah of course! thank you so much. its always the small details i miss ahaha!!

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