Question

Find a rectangular form of the equation r=25.

a.) x+y=25
b.) x^2+y^2=5
c.) x^2+y^2=625
d.) x^2+y^2=25

Answer 1

the eqn is in radian form....and it represents a line/curve which is always 25 away from (0,0) so what do u think it is?

Answer 2

i think its b, but i just wanna be sure.

Answer 3

OK good u know its a circle....but the general form of a circle is x^2 + y^2 = r^2 right? what is r in this case?

Answer 4

oh, so its d?

Answer 5

but it is r^2.....

Answer 6

c...

Answer 7

right :)

Answer 8

i would have never thought that.

Answer 9

at least u never say a ;)