Equation of x axis is __
a) x= 0
b) x=y
c) y=0
d) x+y=0
On x axis, the value of y is 0 and x keeps varying.
So, the equation of x axis is y = 0
Any point on the y - axis is of the form
(a) (x, y)
(b) (0, y)
(c) (x, 0)
(d) (y, y)