For which of the following, y can be a function of x, `(x in R, y in R)`?
`{:((i) (x-h)^(2)+(y-k)^(2)=r^(2),(ii)y^(2)=4ax),((iii) x^(4)=y^(2),(iv) x^(6)=y^(3)),((v) 3y=(log x)^(2),""):}`

For which y can be a function of x. (x in R, y in R) y^2=4ax

For which y can be a function of x. (x in R, y in R) x^4=y^2

For which y can be a function of x. (x in R, y in R) x^6=y^3

For which y can be a function of x. (x in R, y in R) (x-h)^2+(y-k)^2=r^2

For which y can be a function of x. (x in R, y in R) 3y=(logx)^2

Find the value of x and y which satisfy the following equations (x.y in R)(i)(x+2y)+(2x-3y)i+4i=5

Find the centre and radius of each of the following circle : (i) x^(2)+y^(2)+4x-4y+1=0 (ii) 2x^(2)+2y^(2)-6x+6y+1=0 (iii) 2x^(2)+2y^(2)=3k(x+k) (iv) 3x^(2)+3y^(2)-5x-6y+4=0 (v) x^(2)+y^(2)-2ax-2by+a^(2)=0

Which one of the following is not a function? {(x , y): x , y in R , x^2=y} b. {(x , y): x , y in R , y^2=x} c. {(x , y): x , y in R , x=y^3} d. {(x , y): x , y in R , y=x^3}